3
votes
2answers
959 views

What to Look for When Buying a Rebuilt Engine

I'm looking at a 98 Mazda 323 1.8L with a rebuilt engine. Basically, a mechanic bought it cheap due to shot rings and rebuilt the engine to sell it at a profit. He said it's the fifth engine he's ...
4
votes
0answers
384 views

ESP warning light on

Audi A3 8PA 2005my 1.9tdi Esp warning light is on and diagnosis with VCDS shows fault :- 00493-ESP-Sensor unit (G419): No signal/Communication No other warning lights are showing. I have tried ...
2
votes
0answers
36 views

Ford Focus TDCI (2003) chokes at red lights

I've got a problem with my French Ford. I replaced the engine a year ago although I'm not entirely sure the old one is dead (but it's run 380,000km). Anyway, for a couple of months the engine stops ...
4
votes
0answers
181 views

Can't get my riding mower to start, Craftsman LT1000

Ok, so here's the full timeline on what's happened. About a week or 2 ago I got a mower from a guy I know who wasn't using it. It's an 18HP Craftsman LT1000. The only issue he told me about is that ...
1
vote
1answer
92 views

Dodge Journey Crew GPS activation

My brother in law got a Dodge Journey Crew 2013, pretty fancy and well-equipped, with a huge screen inside. He has the rear-view camera and he can play DVDs on his screen, he's got the wheel pressure ...
4
votes
0answers
107 views

What causes an engine idle to increase briefly?

I have an 82 Honda 450 Nighthawk motorcycle that I'm rebuilding and I need to tune/balance the carbs. I have them bench-balanced and reset the idle screw on both. Now it runs a lot better, but every ...
7
votes
1answer
1k views

Why does an engine's idle RPMs take time to settle from a cold start?

I've noticed my car's (healthy) engine will idle at a slightly higher RPM for a few moments after it's been started from cold/not run for a day. I also noticed that my (somewhat less healthy) other ...
-1
votes
1answer
112 views

Suggestions for replacing/upgrading exhaust/silencer for a 125cc Motorbike [closed]

I have a 125cc Yamaha Gladiator SS125, which is about 3 years old. I had my stock air filter (paper-based) removed and installed a K&N conical filter about a year ago. I wanted to know if anyone ...
12
votes
3answers
26k views

What exactly is a “burnt valve” and what causes it?

I've come across this term a couple of times in the context of diagnosing engine-related issues, but don't know what it refers to. Here is an example from an automotive forum I frequent: I gotta ...
-3
votes
1answer
125 views

Engine sounds like it's in 4th gear while it's in 5th gear, the revs stays normal [closed]

Engine sounds like it's in 4th gear while it's in 5th gear, the revs stays normal, what could cause that?
1
vote
1answer
256 views

Why my bike shows petrol missing before 2000 RPM in all gears?

I am using Hero Karizma R (225cc, 5 gears). Recently I feel a missing in all gear befor 2000 RPM. Sometimes my bike turn off due to this missing. Usually it happens at 1st/2nd gears. After 2000 RPM ...
3
votes
1answer
354 views

Rim/tire two wrongs make a right?

One of the back wheels on my car has a different rim size than the others. Specifically that odd wheel is 195/65R15 whereas the other three tires are 205/55R16. I calculated the total diameter of the ...
2
votes
1answer
48 views

Brakes smoke on driver side, but only after non-level terrain

I recently had my brakes serviced. Pads and rotors were replaced. Everything seemed fine. Today, I took a 30 minute drive where I applied the brakes significantly on the way back due to hilly terrain, ...
4
votes
2answers
273 views

Can an old car engine be used outside of a car?

After selling my car for salvage recently I began to wonder if I could repurpose my next car's engine for anything. Can old car engines be made into generators or other useful machines?
3
votes
2answers
294 views

Can shaft journals ever lose lubing against bearings?

Having opened cylinder valve covers, I was observing how my camshaft is mounted onto the static bearings via journals (basically, parts of any shaft that rest against bearings) that completely wrap ...
4
votes
2answers
367 views

Synchromesh, Helical gear design

What specifically, is the design principle behind the Helical shape of gears in a synchromesh transmission? Are the Helical gear designed, in any known vehicle, to disengage? Is that why the gears ...
3
votes
2answers
502 views

Hyundai Getz roof antenna mount broke

So, I went to wash the wife's car yesterday, and (as always) struggled with unscrewing the roof antenna from its base. This time, however, the thing broke. Now I'm thinking, is this something I can ...
2
votes
2answers
74 views

Car explosion during compression

A question recently dawned upon me: do cars explode when they are compressed at junkyards? It seems like the answer would be 'no', obviously, or else this would most likely not be common practice. But ...
4
votes
1answer
212 views

Fuel efficiency and volumetric efficiency

I was reading about the better volumetric efficiency of DOHC engines as compared to SOHC engine and was wondering if fuel efficiency is directly related to volumetric efficiency.
6
votes
1answer
449 views

Torque spec variance with Anti-Seize

I see a lot of variances with torque specs when a fastener is lubed with anti-seize. Some places say 25% less torque is required for same clamping load, some places say 40% less is required. I'm ...
6
votes
2answers
955 views

Why not have drive chains instead of drive (serpentine) belts?

My drive (serpentine) belt was recently chewed down to about half the width and I had to replace it. Which brings the question: if the automotive industry has been gradually replacing timing belts ...
3
votes
2answers
132 views

Washing shop clothes with lots of motor oil on them

What's the most effective way to wash your shop clothes that have lots of motor oil? I don't want to put it in the washer together with my regular dirty clothes to avoid spreading the oil onto them. ...
0
votes
3answers
2k views

How to add Fog Lamps to Maruthi Suzuki Alto 800

I have a Suzuki Alto 800 lxi 2015 model and I would like to add Fog lamps for that, which is does not come with this model. But the Alto K10 has it. So I would like to modify it. Can I do that ? and ...
3
votes
2answers
3k views

Wheel offset effect on performance

When it comes to upgrading wheels and tires, drivers tend to have two different goals in mind: Improving their vehicle's handling/performance Improving their vehicle's appearance A lower positive ...
-1
votes
1answer
90 views

Doors unlocking themselves after being locked for hours. Mitsubishi Verada [closed]

doors are unlocking after hours of car being locked up. Mitsubishi Verada.
-1
votes
2answers
192 views

AJS Regal Raptor cranks but won't run

I have a AJS Regal Raptor DD125E. When I push the starter switch the engine spins but no spark at the plugs. However as I release the starter switch I get a spark from the plugs on the engine overrun. ...
4
votes
3answers
314 views

08 Audi A4 B7 2.0T DTC P0503 speed sensor erractic/high

I just finished reinstalling the intake manifold after cleaning the valves and went to start the car. It starts for about 2 seconds before shutting itself down. It throws 6 pending codes. P0503 - ...
2
votes
2answers
107 views

Find the version of a motorcycle

I need to know the exact version of my motorcycle, I can't find this information on the frame nor the user manual. It's a Kawasaki ER-5 sold in October 2005 in France. I want to replace the fork oil ...
2
votes
1answer
529 views

Does Mazda's Skyactiv-G engine avoid EGR altogether?

It looks like Mazda sees high compression-ratio engines as the way forward to boost fuel economy and specific power on their midsize gasoline engine lineup (13:1 is an impressive achievement). ...
2
votes
1answer
239 views

Installing a Camry engine in a Highlander

Recently bough a Toyota Highlander v6 3.0 4wd, it has an engine knock. I was wondering if I could use a Toyota Camry's engine instead of buying a new one for the Highlander. If I do this, what will be ...
0
votes
1answer
44 views

Is the steering ratio of Ford C-Max constant or variable?

I would like to know whether the steering ratio is constant or rather variable on a Ford C-Max Mk1 (2003-2010).
2
votes
0answers
203 views

Car transmission jerky downshift to 1st gear when braking to a stop

I have an Automatic transmission 2002 Nissan Maxima and want to know if a faulty vehicle speed sensor can cause a car to lurch forward when braking. If I am travelling at 40 mph in 3rd gear and then ...
10
votes
1answer
76 views

Pre-purchace Testing with a Vacuum Gauge

I'd like to use a vacuum gauge to test older, high mileage vehicles I'm thinking of purchasing. I figure I'll probably be limited to this, checking with a multi-meter, a balance test and whatever I ...
1
vote
1answer
80 views

Dripping water from under the water housing

I am on a tight budget. How do I go through fixing the leak, start with the nuts (enclosed with red hexagons) then the blue ones and then go to the yellow ones or can I go start all together with ...
0
votes
2answers
42 views

Is there a way to check if you're being ripped off for accident repair costs?

I collided with the back of another car. I had a quote from a garage authorized by my insurer that seems large. The estimator made it sound a lot more serious than I expected. He says it's going to ...
2
votes
2answers
191 views

ECU Diagnostic Port cut off and Check Engine Light disabled

I bought a used 92 Integra ZXi recently. I had starting issues so I took it to a mechanic. He found that the check engine light is disabled and diagnostic port from the ECU has been cut off. A very ...
1
vote
0answers
160 views

2 cycle engine has spark and new carb won't start [closed]

I have a 49cc 2cycle engine that I replaced the carb on. It has fresh gas and appears to have a spark. I can't get it to fire even if I put some starter fluid in the air intake. It seems to have ...
4
votes
0answers
116 views

How to wire an ignition switch for boat throttle controller

I have an old Bass Tracker boat. They no longer make the throttle controller for the boat, but I need to replace the ignition switch (which is in the throttle controller). I looked online and this ...
1
vote
2answers
478 views

Low rumble/groaning noise when come to a slow stop

I just replaced my front brake pads and rotors about 2 months ago and am now hearing a very noticeable noise when braking. I'm driving a 2010 Honda Civic LX-S with about 67K miles. The odd thing is ...
1
vote
1answer
81 views

Holding crankshaft still while unbolting pulley by shifting to smallest gear

I've heard that it's possible to hold the crankshaft still, for the purposes of unbolting the pulley, on a manual transmission vehicle without a special tool, by shifting it in the smallest gear (5th ...
3
votes
1answer
165 views

Check engine light 2005 Toyota Camry

I am getting a P1135 code on my 2005 Toyota Camry.I have replaced the A/F sensor first with a Bosch then with a Denso. I am still getting the same trouble code almost immediately after starting the ...
1
vote
1answer
125 views

Brakes lock up when you put the vehicle in reverse

My 2002 Kia Sportage's brakes are locking up when you put the vehicle in reverse. When you put it in drive or neutral the brakes release. When they lockup, it sounds like air pressure and the pedal ...
0
votes
1answer
51 views

Where is this plate from? [closed]

I'd like to know where this plate come from. I suspect that it could be a custom plate from Luxembourg, but I'm not sure because this is not the usual format for european plates (color, no country ...
2
votes
1answer
99 views

Spark plug wires arcing when car is cold

Around one month ago I have replaced my spark plugs and respective wiring. Everything was fine to until one week before, when the car started to misfire (struggle?) in the morning when car is cold. I ...
7
votes
4answers
5k views

Does turning off the radio and other electronics in a car before shutting off the engine prevent battery drain?

My father in law tells me if I leave the radio on in my car when I shut off the engine this will cause a bit of battery drain when I start the car. He says this will actually reduce the life of my ...
11
votes
3answers
5k views

Why does diesel engine have redline much lower than petrol engine redline?

why do diesel cars redline at around 4500 rpm whereas petrol ones around 6500 -8000 rpm? Does this have something to do with the compression ratio?
1
vote
1answer
61 views

Can I use tap or A/C water in my battery?

I am a little confused on this, I have been using tap water which seems to work(I don't know if there are some long time after effects). But someone recommended to use the water coming out from my A/C ...
3
votes
1answer
9k views

How to diagnose a bad spark plug?

What I always did up to now to check if my spark plug was doing fire : Remove it. Keep it plugged into the spark plug cable. Ground it on the frame. Start and check if sparks happen. If they are ...
5
votes
2answers
293 views

How, and why, do you test coolant concentration?

In the owner's manual for my 2001 Ford F-150 (5.4L), in the section on "Adding engine coolant", it specifies the type of coolant to be used, and says it should be mixed 50/50 with distilled water. It ...
1
vote
1answer
36 views

How to test if heater core is causing cooling malfunction?

My 2007 V6 Tacoma is overheating, I have done just about any test imaginable, replaced the thermostat, water pump, did many other checks, incl. chemical test for gas residue in the coolant system etc. ...

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