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

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5
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2answers
166 views

Water leaking into frame case/engine?

I just had my 2012 Mini Cooper S (66K miles) repaired last week last week for a failed/leaky water pump. My car had an episode where it overheated and shut down and wouldn't start after pulling over ...
6
votes
2answers
942 views

Why would I paint my car engine?

I've been watching Pete's Garage on YouTube and the guy is absolutely amazing and very enlightening on the subject. He has at least one video on engine painting but he mentions it in a number of ...
4
votes
0answers
89 views

2009 Kia Rio - Potential Misfiring?

I have a 2009 Kia Rio with ~75,000 miles. After I first start the car and accelerate away from where it was parked (especially if I accelerate hard), the car will repeatedly make a quick sound that ...
1
vote
2answers
264 views

Car won't start, dies after jump

I have a 2007 Ford Mustang, 6 cylinder. A few hours after I drove it, the battery was completely dead. It can start with a jump, but if left to idle the engine stops soon after the cables are removed. ...
1
vote
1answer
85 views

Are valve guides normally reusable?

A valve assembly diagram from my Tacoma FSM designates valve guides as non-reusable. I was wondering if that is just a CYA or really the case.
5
votes
1answer
371 views

Minor grinding noise and vibration when car is idle

I have a 2005 stick shift Toyota Camry. Sometimes when I am at a red light or stop sign and the car is in neutral I feel a slight vibration from the pedals and a slight grinding noise coming from the ...
2
votes
2answers
330 views

Engine jerking and revving, multiple failed ignition coils

This problem started a month ago. My Aveo started revving and jerking when it was sitting at a light on my way home (2 blocks from my house) and the engine light came on. I drove it home. The next ...
7
votes
3answers
4k views

Effects of leaky exhaust valves

While rebuilding my valves, I noticed that 4 out of 6 exhaust valves on one side of the V6 engine were leaking after lapping and I had to relap them. I determined that by doing a water test. I am ...
5
votes
1answer
149 views

Reliability of water test for valve seal

I took my valves out, cleaned and lapped them and put them back together. I also put new valve stem seals. At least on one side of my V6 Tacoma. I performed several water tests to check the seal of ...
3
votes
1answer
106 views

Timing Sprocket Marks Disagree with Distributor for TDC

I am in the middle of replacing my 1998 Dodge Dakota 39. V6's timing set. According to the manual and everywhere online, the camshaft sprocket dot should be at the bottom and the crankshaft ...
5
votes
1answer
431 views

Engine run-on (dieseling) condition suddenly getting much worse

1995 Chevy S-10 Blazer - 4.3 L Vortec V6 (vin W with PCM) - 230,000 miles original owner. OBD-I (or 1.5) GM transitional year with OBD-II style connector. I've been working on my vehicle a lot ...
1
vote
1answer
182 views

what engine came in 2007 chevrolet avalanche LTZ?

I have a 5.3 Liter engine from a 2007 Chevy Avalanche LTZ. I removed it and swapped in a 6.0 for a customer. What is the name given to this V8? It has an aluminum block and cast 243 heads. I need to ...
2
votes
1answer
211 views

When to Use a Sleeve 'N' Seal?

A Sleeve N Seal is a thin-walled metal ring ~1" deep with an accompanying tube of "seal". It comes with some timing cover gasket sets. To install it, you heat the ring up in the oven on 500 degrees ...
4
votes
2answers
205 views

Is it reasonable to charge the customer $1000+ to assemble the top of the engine?

I recently have an engine overheat issue and see my previous post for details: How long does items in the engine last in general for standard size cars? This is an interesting follow up on that at ...
2
votes
1answer
101 views

1999 Ford Expedition 5.4 sparkplug/ignition coil replacement

I got a service engine soon light and and scanned it. It came out to be cylinder 5 misfire. My truck shook a little on idle more when I gassed it. I talked to some mechanics and told me it would be ...
4
votes
2answers
339 views

VW Golf IV Possible Engine Misfire

I guess I better start with a few details on the car in question: VW Golf IV 20 valve V5 petrol engine (2.3L) ~80k miles on the clock Now the problem, it feels to me as if the car is down on ...
3
votes
1answer
429 views

How long does items in the engine last in general for standard size cars?

I have a volkswagon passat wagon. It just reach 70000M and it is 2007 model. I recently check the engine at the dealership. Now they asked me to replace all the following items to fix engine overheat ...
3
votes
1answer
39 views

What Do I Use for a Thrust Plate After Double Roller Timing Chain Swap

History/Background of This Engine The Magnum 3.9 V6 was introduced in 1992. In 1997, a TSB was issued to fix excessive timing chain noise. The fix was to remove the cam thrust plate and chain oil ...
4
votes
1answer
2k views

Effects of driving through deep water WITHOUT hydrolocking (car still bogged down and died)

So, yesterday we had very heavy rains, and unfortunately I was driving in an unfamiliar area of town. I drove through high water, which caused my car to sputter and so I turned around. The car behaved ...
6
votes
4answers
2k views

Why does the power output peak and then drop as engine speed increases?

I have been looking at the power bands for my car (2000 Opel Agila 1.2) recently, as I want to work out when it is best to change gear and stuff, as I have no life! This is the approximate graph I ...
3
votes
1answer
73 views

If there is a vacuum leak, after you shut off engine, there should be no assisted braking immediately

Is this true or false? Without vacuum leak, the first few times you pump the brake, you can still get some of the vacuum assisted braking. I'm trying to diagnose suspected vacuum leak in this case.
3
votes
1answer
242 views

VW Golf 2001 Mk4 Diesel ASR Engine Problem

I've spent a crazy amount of money on my car lately and I still have the same problem. I've replaced the: Catalyst Converter Radiator Starter Motor EGR Valve Track Rod ends & Wheel Bearings ...
3
votes
1answer
278 views

Is it better for car's longeviety in cold climate or hot climate

Leaving out performance aspect ( Since cold weather is best for that ) I want to know which is better to maintain a car and its longevity. My arguments for Hot weather: Engine reaches optimum ...
2
votes
0answers
34 views

My car is running very poorly when I start my 1994 Buick Century

My car is running very poorly when I start my 1994 Buick Century for the first time every day. It will stall out especially at a stop, but starts right back up and it stutters. Plus, the service ...
10
votes
5answers
905 views

Second hand car - Engine/Tyres/Etc

I am looking into buying a second hand car from a reputable Mercedes-Benz dealer (not just some dodgy salesman by the side of a road lol....). Anyway, there are a few maintenance/mechanical things ...
3
votes
1answer
102 views

Valve lapping and lubrication

I have recently taken all my valves out and cleaned them with a wire brush as well as the shafts in the cylinder heads. I am now getting ready to put them back in and have several questions: What ...
9
votes
2answers
2k views

Modern cars and diesel warm-up time

First of all let me say that I already read this question and its answer, so it's clear to me why diesel-powered cars need a warm-up time. My question is: do modern cars need it too? I have VW Golf ...
5
votes
3answers
403 views

Honda FIT GP1 HYBRID 2011 knock

in my auto gear honda fit gp1 hybrid car, (mileage 56 000 KM) I had a engine tune up and changed my injectors (8 injectors) last month and after 2 weeks i started getting a slight knock (jerk or ...
2
votes
1answer
124 views

What does valve lapping compound actually do?

As I understand, valve lapping is done to ensure a seal between the valve and its seal ring at the end of the shaft. I am just curious how valve lapping compound facilitates that? Does it make a ...
5
votes
1answer
963 views

Acceptable amount of slack in a timing chain with high mileage?

1995 Chevy S-10 Blazer - 4.3 L Vortec V6 (vin W with PCM) - 230,000 miles original owner. FWIW, this model car/engine does not have timing chain inspection and/or changing as part of the routine ...
3
votes
1answer
155 views

Should I care about valve order or are they interchangeable?

So I've just learned how to take valves down and I'm pretty fascinated by the whole mechanism. I got a C-clamp compressor and took two valves out just to try. Went smooth. A question: is it important ...
3
votes
2answers
127 views

Why are intake valves dirtier than exhaust?

I took my engine apart and one of the things I noticed, on both cylinder heads of my Tacoma V6, is that the intake valves (picture right) are significantly darker (or dirtier) than the exhaust ones ...
6
votes
1answer
676 views

Engine revs to 4000 RPM without pressing gas pedal

I tried to start my car today but something strange keeps on happening. It turns on just fine, but once the engine is operating it starts revving to 4000 RPM even though I am not pressing the gas ...
2
votes
3answers
283 views

Lugging vs stalling an engine

Does stalling an engine count as lugging it? I know lugging is not good for the engine for various reasons. Does stalling do those to the engine as well? Thanks
4
votes
2answers
210 views

Should I lap my valves if I have easy access?

Now that I have my cylinder heads out of my V6 Tacoma, I am considering taking the valves out to inspect them in case they are bent or whatever and grind them. There is no symptoms of valves ...
3
votes
2answers
154 views

2006 Pontiac g6 rough idle and intermittent spongy brake and starting issue

I have a 2006 Pontiac G6 with 160k on the 3.5 motor. Around 155k the brake pedal went hard and spongy. Also, about 1 in every 40-50 times I start it cold, the starter will turn without a successful ...
3
votes
1answer
287 views

Do Compression Rings and Oil Ring Wear at the Same Rate?

Is it possible that the oil control rings might be worn to the point that you're burning significant amounts of oil, but the compression rings still be good? Or do they typically wear out together ...
4
votes
1answer
234 views

What is a stress riser?

What is a stress riser and why is it important to avoid them during engine construction or rebuild?
2
votes
0answers
19 views

Be van with problem at higher altitudes [closed]

2000 euro van engine shuts off when reaching altitude of 9000 feet in mountains. After standing for 20 minutes, it starts. This happened twice but ran well when not in the mountains. Similar to cars ...
3
votes
1answer
51 views

Access to Piaggio MP3 engine

Some help needed here. I ride a Piaggio 250 mp3 scooter. After a few weeks of stalling at traffic lights, it finally refused to start engine at all. I've tried the garage but they didn't repair it ...
0
votes
1answer
498 views

Non-interference engine explanation animation/Videos?

Non-interference engine explanation animation/Videos ? I did ask my Toyota dealer about published material on 1999 Camry 2.2 non-interference engine that did not cause piston hitting valves/ valve ...
5
votes
1answer
143 views

2007 Hyosung GT250R not starting, some repairs have been made

Hoping to find some good advice on fixing my (above mentioned) motorcycle. I'll try to keep it brief but with as much details as I can. I had an issue with the bike and it sucked up some varnish from ...
1
vote
0answers
168 views

Gas pedal suddenly not giving power to my car [closed]

I have a 2006 Mitsubishi Lancer.I was driving about 110 km/hr and then my car started to lose speed. I was pressing on the gas pedal but it was like it lost the ability to work. My battery light and a ...
5
votes
2answers
1k views

Cadillac CTS 2007 3.6 oil consumption

3 months ago I bought Cadillac CTS 2007 3.6 with 31k miles, next day I went to local garage and changed the oil, filters, etc. I have driven 7k miles since and when driving last week car started ...
4
votes
3answers
4k views

Why do valve lifters get stuck? How come they unstick by themselves?

I've seen this happen on a couple of different engines so far (BMW S62, Mitsubishi 4G63) but am not sure about how commonplace it is. If an engine isn't used for an extended period of time, the ...
5
votes
1answer
970 views

Is cylinder leak down test needed if compression test results are fine?

If I compression test my engine and the results are fine, could there ever be any need to leak-down test it as well? IOW, can a leak down test ever fail if the compression test is fine. RELATED: ...
6
votes
3answers
1k views

Infamous WRX/XT overheating problem

I need some help figuring out what's wrong with my 2007 Forester XT Manual. Background: The headgasket popped in November of last year. I had it fixed by an RMI certified workshop. They skimmed the ...
1
vote
2answers
359 views

2006 Infiniti G35 - Blown engine following Kwik Kar engine flush

(Apologies in advance for the lengthy post.) Background 2006 Infiniti G35 Coupe, 6-speed manual, 112K miles. I bought the car from a friend when it had about 50k miles. He had the car for the ...
1
vote
1answer
275 views

Are Boxer Engines Easy to Work On? [closed]

How hard are boxer engines to work on and how common are they? Specifically, I'm looking at a Subaru Impreza with a 1.6L EJ16 boxer engine ( which seems to be in very good condition ) and am ...
5
votes
2answers
697 views

What causes too much fuel for my Briggs and Stratton engine?

I recently bought a generator that uses a Briggs and Stratton 17hp Vanguard engine. Before purchasing the generator, it had not ran in several years. The fuel was stale and the oil needed to be ...