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Questions tagged [camshaft]

A shaft in an ICE that actuates components that open valves into the combustion chamber to allow the flow of necessary gasses in order for a combustion process to function.

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Cracked on i20 camshaft?

Are those markings, tampered or cracks on the picture of Hyundai i20 camshaft normal???
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06 Toyota Avalon Sensor positions

Looking for help diagnoising a couple issues with my Avalon. I have some codes coming up, bad crankshaft sensor and bad camshaft sensor. I also have the cel, vsc, and trac light on. I tried replacing ...
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Camshaft Sensor Position problem or Oil Related problem

I have a 2014 VW Jetta SE. Recently my engine began making an off and on Growling noise while driving around. At the same time, my engine light came on. Took the car to get checked and the reading ...
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28 views

Chysler Town & Country Cam Shaft and New Engine

I took my 2014 Town and Country in for rough idling and check engine light and got a diagnoses of 5th cylinder no compression. Ultimately it was suggested I should consider a new engine. Now it turns ...
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Fitting rear cam to a pulse. System

How to wire rear cam into reverse light on Corsa 3014 But the wiring is the pulse that we have to splice into
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20 views

Cam phaser on 2008 Impala 3.5

I'm getting ready to rebuild this motor and don't have experience with cam phasers. When taking the cam phaser off and reattach after rebuild, do I need to do anything specific to make sure there are ...
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206 views

When should assembly lube be used?

I will be opening up the top of an engine to clean the ticking lifters. To do so, I have to remove the camshaft. I have seen several people use assembly lube on the camshafts lobes and 'fixation ...
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74 views

Asseing the condition and wear on camshaft

Does this lobe looks worn? I’m trying to assess the condition of the camshaft.
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189 views

How to set cam timing from scratch for Honda RFVC, DOHC, four stroke?

I'm doing a full engine rebuild on an Honda GB250 clubman, RFVC & DOHC four stroke. I would like to know how to set cam timing from scratch?
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Slipped timing belt. Can hard cranking an engine with cam timing way off likely cause valve damage?

I have a 1979 Austin Sherpa with an "O Series" 1700 petrol engine. Engine was running great before I replaced exhaust/inlet manifold and an SU Carb. Then it just wouldn't start. The engine was ...
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1answer
739 views

I cannot find TDC window on Jetta 2013 2.0 engine

I'm fixing my father-in-law car, Jetta 2013 S 2.0, and I'm in hurry since I need to fix before he come back on Dec 29th. I really appreciate for everybody input. The car has bad camshaft position ...
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4k views

Non-zero voltage on camshaft position sensor power wire without main relay. Is there short somewhere?

I have been troubleshooting Camshaft Position Sensor no-start issue in this thread for my 2007 Chevrolet Aveo. Long story short - in one of the answers it was suspected that camshaft position sensor ...
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How should Camshaft Position Sensor output look on oscilloscope?

My Chevrolet Aveo 2007 had P0340 code and crank, but no-start condition. I bought a replacement camshaft position sensor. The P0340 code is not there anymore, but the car still does not start. First ...
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How many Watt Hours are consumed to jumpstart car?

I bought one of these portable jump starters. This one says in specification that it can start a big 6L gasoline engine up to 12 times on a single charge. Simple math implies that each jump-start ...
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Chevrolet Aveo won't start (codes: P0340, P2106, P2110, P2101)

Two months ago my Chevrolet Aveo 2007 had intermittent interior and exterior light flickering problem that was especially noticeable while idling or driving at low speeds. Also, one morning the car ...
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1answer
527 views

Timing chain replacement and the CVVT system

I have this KIA Cerato "Forte" 2010 with an G4FC DOHC 16V 1.6L MPI with a single CVVT on the intake side. I'm changing the timing chain, tensor and the two sliders, I thought it is a simple ...
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3k views

P0017 after oil change

I have a 07 Cadillac CTS. I got my oil changed on Saturday at a Valvoline oil change shop, didn't drive Sunday, then on Monday my check engine light came on and the car now accelerates slowly. The ...
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80 views

What would happen if you tried to start an engine with the cam gears meshed

What would happen in the case that someone tried to start an engine like this: My guess would be, if the starter has enough torque to overcome the strength of the cam gear teeth, it'd wreck the cam ...
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692 views

Steel for crankshaft's / camshaft's woodruff key

I have a new little problem with the engine I'm rebuilding (Skoda 120L '70s, RWD, RME): after milling, adjusting and cleaning the crankshaft, camshaft and pulley I found out that their woodruff keys ...
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306 views

Nicked cam journal - how bad is it?

I was pulling the valve cover off my 2004 Volvo XC90 T6 to reseal it and found this nick in the head in the camshaft journal. The cover is pressed onto dowels mounted in the head and naturally when ...
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85 views

Which are the MX-5 B6 engine camshaft specifications?

I repair my car (mx5 mk1 B6 engine 1992) recently by swapping the cylinder head with another used one. After the operation, the car won't run. Tries to start a combustion while you crank but stops and ...
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547 views

Valve lifters hitting camshaft when hand cranking

I have a 2000 Chevrolet Malibu 3.1. I changed the head gaskets the intake manifolds and the valve stem seals. Before starting the engine and putting everything 100% back together , I wanted to make ...
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470 views

Can the fuse cause my fuel pump not to turn on or is it the camshaft sensor that doesn't let my fuel pump to turn on?

I have a 1998 Ford Explorer that does not start cranks but doesn't start. I've replaced the starter and battery so far. After replacing that it didn't want start just cranked. I thought that it may ...
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1992 Ford F-250 4x4 5.8l 408ci stroker tuning questions

I have a 1992 Ford F-250 4x4 w/a 5.8l blocked 408ci stroker attached to a ZF 5 speed tranny running 3.55 gears. On the engine sits a set of 64cc chambered, 190cc intake runner, 70cc exhaust runner, 2....
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111 views

Camshaft sinks too much into block: add spacer washer at its end?

While I'm rebuilding my old Skoda Estelle engine I got this new issue: I have found a better engine block that I want to use, however the camshaft I have from the other block, sinks too much when I ...
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Why is there a difference in timing belt replacement intervals between two countries

Specifically, the Subaru WRX sold in South Africa and Australia is 100% identical. And I mean that South Africa gets the Australian version of the WRX, there's no homologated version for SA. Well, ...
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How are rotary valves sealed

I have been looking for information on how rotary valves are sealed, but have not had much luck. Coates has engines with them, and they are oil less to boot or so they claim, but how do you get them ...
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766 views

Triangular Wear Pattern on Edges of Cam Lobes

While I had my valve cover off I noticed that all my cam lobes of this triangular indentation or something: Anyone know what this is? Is it a feature or a bug? Normal wear?
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4k views

What exactly is a jackshaft?

The Wikipedia entry for the Ford Cologne 4.0L SOHC describes the use of a "jackshaft": It uses a jackshaft in place of a camshaft to drive a timing chain to each cylinder head. Three timing chains ...
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1answer
179 views

How to re-torque a partially loosened overhead camshaft?

While doing a timing belt service on my 17 year-old, 57K-mile truck (DOHC), I was having a very hard time getting it to let go of the front oil seals on the intake camshafts.1 I eventually realized ...
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1answer
72 views

Why are these cam pulleys constructed differently?

I am about midway done with changing the timing belt & water pump on my 99 Toyota, which features a 6-cylinder 5VZ-FE engine. After getting the front timing cover off, I noticed that the passenger-...
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2k views

97 manual ford ranger throwing a camshaft position sensor code

We've replaced the computer, sensor and timing belt(not sure of we did it right). Relays are good. Truck will fire, stay running for about 30 seconds then bog down & die
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649 views

85 octane gas causing engine knocking and retarded CAM time?

I'm about to betray my ignorance of cars but here goes: I am a driver from Minnesota (where the lowest octane rating is 87) vacationing in Colorado and have noticed that after I put 85 octane ...
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4k views

Is it right to say that VTEC is solely by Honda?

I have an i-VTEC engine, which Honda claims to be a better and computerized version of their famous VTEC Engine. Now I am wondering: Is it right to tell people that only HONDA has VTEC? or is this ...
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2answers
192 views

Ninja 300 camshaft failure, possible causes?

Back from this post We opened the engine today to do some maintenance and we found the end of the camshaft was damaged, we already have a new one in order but we would like to hear your opinions on ...
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420 views

Focus ST 2.5 MK2 - Cambelt changed, super charger noise when giving throttle

I took my vehicle in for the cam-belt service drove back home and noticed this whine/supercharger noise which increases in loudness when I press down on the throttle. I suspect the cam-belt is too ...
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523 views

How would a camshaft start moving during a cold start?

I want to know how would a camshaft ( and valves by association ) start moving on a cold start up? What gets them running and moving. Are there something they connect to to get them going?
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104 views

What Type Of Camshaft Location is most common?

I want to know what type of camshaft location is most common in most vehicles? Is it an OHV/DOHV or OHC/DOHC/SOHC
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2k views

Where do the Camshaft Go?

I am new to understand engines. One thing that got me confused is the location of the camshaft. At first I seen it go above the valve so I thought it sat in the cylinder head. Now as I'm watching ...
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64 views

Where do you install cylinder heads, camshafts and valves in different engine types?

I am trying to learn about engines, so my question is where do valves, camshaft etc go inside different engines? I see different engine have them in different places, base on if the engine is a inline,...
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1answer
2k views

Tools for removing / installing valve shims without removing the camshaft

Two of the cars I own have DOHC engines ( Nissan GA16DE and Mazda 2L FS ) which use shims for adjusting cam to lifter clearances. You can see an example here on the Nissan how the lifters are ...
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815 views

“Valve like” noise after modifying camshaft ninja 300

A friend and I bought a modified camshaft for his ninja 300/EX 300. After installing and checking/adjusting valve clearance everything seemed ok. After a few laps on our local track the bike started ...
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293 views

Did the mechanic break my camshaft?

I recently had some work done under the hood of a 1999 Toyota Corolla (I believe they did some work trying to repair a gasket leak), and shortly afterward it broke down and would not start. I took it ...
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243 views

Camshaft problem not sure what needs replacing

I'm Looking for a part name and info on what could have caused the problem. So I have an 03 peugoet 206 1.4 HDI and I lost a cylinder after going though them by disconnecting each injector and can ...
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1answer
12k views

What are crankshaft bearings and how are they different from camshaft end bearings?

I hope the answer is not too similar to this question. I have a basic understanding of the role a crankshaft plays in the internal combustion engine, which leads me to ask: Crankshaft Bearings What ...
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14k views

What are Performance Camshafts?

I read the following question recently: What is it about performance cams that make engines produce more power when they are installed? I know there are a few components for cars that have "cam" ...
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296 views

What is meant by degreeing a cam?

In the hot rodding world, "degreeing the cam" is an often used term when installing an aftermarket camshaft. What does the term mean, what does it do for you, why should you do it, and what are the ...
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1k views

Formula 1 valve trains

There was a statement in a post regarding Formula 1 valve trains being pneumatic or magnetic. Are there valve trains driven magnetically or pneumatically that are on the market? When did they start ...
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1answer
3k views

How does Valve Overlap affect emissions?

In this question, it is suggested that valve overlap can affect emissions. In what way can valve overlap affect emissions?
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775 views

What is Lobe Separation Angle (LSA)?

What is Lobe Separation Angle (LSA) and how is it used in camshaft design? How is it measured? What difference does a long or short LSA make?