Internal Combustion Engine. Most engines in road going vehicles are 4-cycle internal combustion gasoline engines.

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7
votes
1answer
62 views

2015 Honda Mobilio - Car shakes when started

I have a 2015 Honda Mobilio with a manual transmission. I have had this car for 6 months and have not experienced any problems until yesterday morning. When I start my car, the engine shakes badly. ...
2
votes
1answer
49 views

What sort of temperatures do exhaust manifolds on large engines reach after normal operation?

The main car that I was wondering for was a Nissan Altima 2.5l 4dr. 2007 with 138,000 Miles
7
votes
2answers
108 views

Shouldn't a loss of compression equal a loss of power?

I recently did a compression test on a Nissan B13 GA16DE and got 125, 127, 122 and 140 psi (cold). A few years ago, all 4 cylinders got 135-140 psi, cold. Shouldn't this loss of compression have led ...
2
votes
1answer
27 views

2002 Chevy Blazer - Oil in coolant

I have a 2002 Chevy Blazer with 237755 miles. I was just informed that I have a blown head gasket and oil is leaking into my coolant. On my way into work this morning my check engine light was ...
3
votes
1answer
50 views

Can I use hard tools to remove hardened carbon buildup on valves?

I used a brass brush by hand to clean the carbon off the aluminium head of my BMW R80GS 1991. The valves however are very stubborn, a brass dremel head won't do it either. I started using a soft steel ...
1
vote
0answers
48 views

Hot cranking problem on 6.6 duramax

6.6 duramax diesel engine cranks good cold but periodically won't crank hot unless I use starting fluid. This usually happens after engine has been turned off about 30 minutes. Also if idles for ...
5
votes
2answers
112 views

Where does the piston stop after the ignition is turned off?

Compression stroke at TDC or Exhaust at TDC or somewhere else? Is this position fixed or does it depend on other conditions?
2
votes
2answers
97 views

Engine died after driving fast on highway

I drove my 2004 Ford Ranger 3.0L V6 on the highway at 120 kph (65 mph) in second gear, and the engine died. Is it seized or can I repair it? The transmission fluid is still the proper color and doesn'...
-2
votes
2answers
59 views

Engine oil in coolant

There's is oil appearing in the engine coolant, does this mean i have to buy a new engine? The car is a 2003 Ford Focus with 180k miles.
1
vote
0answers
16 views

Troubleshooting PO705 code on 1996 Nissan pick-up truck 2.4 liter engine

I took my Nissan pick-up truck to the smog station, and this code appeared. This made it fail the smog test. What can I do to fix the problem?
4
votes
2answers
33 views

Troubleshooting P0507 code on 05 KIA Spectra?

I bought an 05 Kia Spectra EX for my daughter. The engine is throwing a P0507 code which is Idle Air RPM greater than expected. I did some research and apparently this is a pretty generic code that ...
3
votes
0answers
43 views

Overwhelming the Eng. management system, is there specific course of action to recover faster

Citroen C4 2005, Petrol, UK Yesterday I managed to overwhelm my car (for the second time I've been having it, first time was about half an year go). What happened was I was at a rather busy stop ...
4
votes
4answers
98 views

Can I use modern brake cleaner on exterior engine parts?

I want to clean the cylinder fins of my BMW R80GS 1991 with brake cleaner and a brush. If I am careful to not get it on any rubber parts or gaskets is it generally safe to use on the aluminum parts? ...
9
votes
2answers
194 views

R32 Skyline GT-R low power

EDIT: Added info from comments to bottom of question. My friend recently imported a right-hand drive 1990 Nissan Skyline GT-R (R32) with the RB26TT motor into the states. It's beautiful, and I'm ...
5
votes
0answers
27 views

Timing chain for a sunfire [closed]

Exhaust , intake & the other one at the bottom are lined up when I start after a full rotation they are not, what am I doing wrong?
1
vote
3answers
94 views

Is V-TEC Reliable?

I'm thinking of purchasing a 2001 Honda Civic that has v-tec on the side panel of the drivers side. Are V-TEC engines reliable, and are they well known for performance? The car I'm thinking of has ...
4
votes
1answer
37 views

1997 Subaru WRX STI Type R - Strange and occasional turbo lag

After a longer drive (45 minutes on highway) my turbo is spooling but not putting power to the tires. The revs just kinda bounce there like it's hitting a limiter but it's only around 5k rpm. This ...
3
votes
1answer
38 views

Engine block (?) break, please confirm and suggest causes - 2003 Suburban

There was no indication of a problem last time the vehicle was driven. This morning when starting there was immediate clang/grind sound and rocking of the vehicle. Motor oil began leaking below the ...
2
votes
1answer
37 views

BMW R1200GS LC Warm Up

How long should I warm up the engine before starting casually riding it in the city for keeping the engine as healthy as possible? Not at all, 30sec, 5 min or longer? And how long NOT to warm up ...
1
vote
1answer
46 views

dirt bike low rpm lugging

I have a 84 Honda XL350R. I know redlining a dirt bike is not good, but what about lugging in a high gear? When I say lugging I mean lugging.(no throttle whatsoever, can say the 4 stroke cycle suck,...
3
votes
1answer
60 views

What is causing my starter to arc?

I put a new solenoid in and went to start the motor. The starter ran continuously with the key off. I overrode the solenoid and tried hooking the ground to the engine, and I touching the positive ...
2
votes
1answer
72 views

Is an exhaust mute bad for 2 stroke engines? [closed]

Will an exhaust baffle have any bad effects on a 2 stroke engine if it's used all of the time?
3
votes
2answers
97 views

Should I remove the rings when cleaning a piston?

I want to clean my piston in a small ultrasonic cleaner (with distilled water). Do I need to remove the piston rings to do so, or can I leave them on and make sure it dries completely? If I replace ...
4
votes
1answer
29 views

I have a 2002 Mitsubishi L300 SWB Van - Can it get too cold to start it without damaging it?

It's currently with me in the mountains where it gets very cold, is there any chance of me damaging it by starting it? I started it 3 days ago and let it run for like 15 mins, but haven't since. It's ...
1
vote
0answers
29 views

Nil HydroCarbon in the exaust

If hydrocarbons (HC) are nil and Carbon Monoxide (CO) is 0.33% and Carbon Dioxide (CO2) is 14% Why does the HC show up as nil? Is there a problem with having no HC readings?
3
votes
1answer
21 views

08 Silverado 5.3 cold start exhaust smoke and engine stall

For some time now I've been getting a considerable amount of dark smoke from my tailpipe on cold starts which I believe to be an oil burning issue. I have an oil consumption test in progress, so far ...
3
votes
1answer
57 views

Hero Passion Pro - Choke Issues

I have a Hero Passion Pro Motorcycle. It does not get started when the choke is on. It does start when the choke is turned off? The engine produces a disturbing noise and smoke goes out when the ...
1
vote
0answers
19 views

Multiple misfire on a 1998 Infinity Code

I bought a 1998 Infinity, and it has been running poorly, with a poor gas usage. I went and had a parts store run the computer, It gave me the code Multiple miss fire, along with Knock sensor, Evap ...
3
votes
1answer
20 views

Terracan 2.9 crdi 2004 won't start

Wile driving i activated the high beam (headlights) and the rpm-meter started flickering for a moment and then dropped down to 0. Stopped the car and shut of the engine for 10 min for other reasons. ...
4
votes
1answer
38 views

Stuck valve, loss of pressure. Risky or only poor performance?

I have a 1998 Toyota Tacoma 2.7L 4cyl with 202,000. The engine has been running rough and will occasionally sputter and die when I let off the gas pedal. I had it diagnosed and they think it's a ...
0
votes
1answer
28 views

My motor in my 2003 Honda 400EX Four Wheeler is making a ticking noise

It's not the lifters might be timing chain but don't know.
2
votes
0answers
36 views

2007 Nissan Quest RPM issues

I have a 2007 Nissan Quest 3.5S. I notice that exactly at 20mph the rpm will be at a specific rpm then fluctuate to a higher rpm then come back down to normal rpm. Is this normal?
5
votes
1answer
50 views

Burning Smell and smoke

I know almost nothing about cars, I have an 05 Vauxhall Corsa 1.2 The other day I had to brake hard, like the hardest I've ever braked, but it wasn't full foot down. As I stopped, I noticed a large ...
1
vote
0answers
29 views

I need to replace an engine in my heritage

My 2002 heritage has over 48,000 miles on it and is making a lot of noise so I would like to replace it with a 2003 road king motor. Would it line up and bolt in without any trouble.
3
votes
0answers
34 views

1st and 2nd cylinder not combusting in dual carburetor'red setup

So I have a Maruti Esteem engine with a dual carburetor on an engine dyno and everything was already installed when I joined this lab. We seem to have a problem when trying to fire the engine. 1st and ...
1
vote
2answers
59 views

2003 Dodge Ram 1500 3.7 backfires and won't stay running

*****update***** We have checked timing, grounds, sensors, everything suggested. New idle control valve, and reset computer. Truck turns over- wont start. Seems like our only option is to replace the ...
5
votes
1answer
76 views

Pivoted curved-path piston engine

Years ago, I saw a documentary about engine efficiency where people were testing a pivoted, curved-path piston engine. The claim is that the standard piston engine, with straight up-and-down path, ...
0
votes
0answers
19 views

Motorcycle bore and stroke [duplicate]

Manufacturers often detail bore and stroke in their promotional material and claim 'achieving the ideal compression ratio' How do different bore / stroke / compression ratios affect an engine's ...
0
votes
0answers
21 views

Excess oil in car engine [duplicate]

Mechanic changd the oil filter forgot to drain the old oil and continued to add the new oil So basically the engine has double the capacity of oil Will this caise damage to the engine
3
votes
2answers
52 views

2006 Audi A4 2.0

I am in the process of increasing horsepower with more boost in my turbo. What's the max boost I can do if I did the k&n air filter upgrade and put a 2.5 down pipe and 2.5 inch exhaust all the way ...
3
votes
3answers
85 views

EFI engine car failed Emission test?

i have an EFI engine car (Nissan N16 Super Saloon - 2000yr) i bought it 6monthes ago as an used car. After i bought it, i had check engine lights on, then i drove it to a mechanical shop few times ...
1
vote
1answer
43 views

89 Pontiac Trans Am GTA Stalls No Start

A friends 89 Trans Am with a 5.7 (L98) PFI stalls and will crank, but not restart until the car sits for a few minutes. I haven't actually looked at it yet. I'm guessing something is getting heat ...
5
votes
1answer
338 views

2011 Jeep Liberty ran without oil, did this cause my engine to blow?

I have a 2011 Jeep Liberty and the oil pan rusted out and it was driven for a while without oil. The oil pan was fixed a couple days later. This happened in April 2014, in Oct 2014 the engine started ...
3
votes
1answer
53 views

Is a greasy exterior a sign of bad maintenance?

All car's I've had (second hand and between 15-30 years old) have always had a greasy veil over engine components. I understand moving components need to be lubricated but this gives off the ...
3
votes
2answers
136 views

Motorcycle bogs down under load

I recently did a head gasket repair on my 1986 Kawasaki GPZ1000RX and now that everything is back together it starts up fine, idles fine, and revs high without a problem while in neutral, but when I ...
2
votes
1answer
27 views

2004 Volvo S60 starting issue

I am interested in buying a 2004 Volvo S60. The guy selling the car says: "It won't start. When you try to start it. its as if the battery was bad, but it's not" Does anyone know what that means? ...
4
votes
0answers
84 views

Car turns off when travelling at high speed

I usually keep a speed of 150-160 km/h (93-99mph) on the highway without any problems whatsoever. However, yesterday I decided to go up to 170 km/h (106mph) and the engine doing around 4600 rpm, when ...
2
votes
1answer
23 views

1999 Chevy Suburban Sluggish Start

My Suburban started doing something odd on starting before, but I'm not completely sure how to describe its behavior. It get's past the battery part fine when it's starting, and the starter motor is ...
0
votes
0answers
19 views

1999 Jeep Cherokee 4.0L engine

Where can I get a wiring diagram for a 1999 jeep cherokee? I am having problems with a couple fuses blowing in the power distribution center under the hood and it causes the check gauges and check ...
3
votes
0answers
33 views

Mitsubishi Eclipse dies while driving, then won't stay on after cranking back up

I drive a 2001 Mitsubishi Eclipse RS 4 cyl. It has a replaced engine from a Galant. The car has started dying on me seemingly randomly - I haven't seen a pattern in the fuel level, time of day, speed ...