Jul 21, 2009 low compression. Discussion in ' Engine ' started by mike11743, Jul 19, 2009 . So I just did a compression chsck and am coming up with about 68 lbs of compression. The cylinder wall looks clean and free of scratches. I just had the motor rebuilt a little over a yaer ago so the piston is newer

Feb 08, 2010 The post below raise eyebrows about no compression. YES, no compression when i started this project but when you take your car to a shop for this problem and they take the engine apart and see wow blown head gasket, the obvious no compression. How would you know if you need pistons and rings. I never had water in the oil

Dec 05, 2008 Dec 5, 2008. #4. videogamemaster said: We tried again and I noticed (with all the plugs removed) that when testing cylinder #3 puffs of smoke would come out of cylinder #4. And when testing cylinder #4 puffs of smoke would come out of cylinder #3

Jan 06, 2010 Slowed down to pass ez pass and 5 seconds later, entire car shut off . All of the lights came on (battery light, oil, everything). Had to be towed. Mechanic only told me that the car has no compression. Claims that becasue engine has no compression on any of the cylinders that the engine needs to be replaced

Mar 24, 2008 Sunday 23rd March 2008. If you have no compression then you almost certainly have a mechanical problem which will require dismantling to diagnose and repair. It could be a

Feb 08, 2021 Top 5 Causes of Low Compression in One Cylinder. Understanding the causes of the problem will help you to identify the source of troubles and repair it. Learning these problems will give an insight of how to fix low compression in one cylinder. Cracked Cylinder Wall. It will trigger poor compression, leading to poor engine performance

Jan 31, 2017 Low compression will cause a misfire. If compression is 20 or 25% lower than adjacent cylinders, that could be causing a misfire. For example, say numbers 1 and 3 cylinders had about 150 psi compression. 80% of 150 = 120, so if cylinder 2 is 120psi or less, that could be setting the misfire code

2006 Hummer H3 33,456 mi, Engine light illuminated several times over a 2 week period. Initailly, dealer suggested that I check the fuel cap and\or purchase fuel from a different station. However, neither of the suggestions solved the problem. Major work (replace head) was required on vehicle

May 23, 2006 Re: No Compression cylinder # 5. With the valve cover off, crank until the intake valve closes. (you can also watch the distributor for TDC on the #5 plug wire) Take out the #5 plug. Apply shop air to the plug hole. You can do this with the threaded end of a compression gauge or with an air gun with a rubber nose

Normally, no engine noise will be present and in most cases, a static compression test or running compression test will not reveal anything abnormal unless the leakage is very high. Notice: If a valve sealing concern is found, it should be repaired by following SI repair procedures

Answer (1 of 2): High compression ratios mean higher EXPANSION ratios on the power stroke. If you compress the incoming fuel/air mixture 8 times (8:1) then it expands 8 times on the power stroke. But if you compress it 11 times, then it expands 11 times in the power stroke. That higher expansion

Mar 19, 2008 Building an engine with a corrected compression ratio of no more than 9.2:1 seems like it would make for more sense in a heavy touring bike loaded two up. I just want an engine that I just get on and start, not worry about a hot restart after filling up for gas or having to pull over cause the bike is over heating when caught in parking lot

Dec 02, 2019 A broken timing chain will cause an engine to not start or fail while driving. If the belt is already broken, the engine won’t have enough compression to start. If it breaks or jumps while driving, the pistons will be damaged from contact with the valves. The

Feb 22, 2019 Im working on a H3 5cyl 20v had a no compression. I replaced the head and timing chain, guide rails op sensor cam - Answered by a verified GM Mechanic ... If it does, the engine will restart. If the OEM diagnostics and the latest version of PIP3694F do not isolate the cause of this concern for either 1 or 2, ... 2007 hummer H3 3.7 code P0017 I

Aug 15, 2019 One possibility is a blown head gasket. The head gasket connects to the cylinder head at the top of the engine. If there is a problem, you’ll notice a gap between the cylinder and the head, and gas will escape the cylinder, leading to low compression

Aug 08, 2021 7. Blown Head Gasket: A head gasket is used to seal the cylinder head to the engine block. When this head gasket fails it can do so between two cylinders and will allow compression to leak creating equally low compression in each. A compression test will be able to detect this failure

Nov 08, 2013 Re: 8n, no/low compression ive seen more flatheads have stuck valves about 2 to 1 more times then ohv engines. some times you can remove the plugs and spay some pb or kroil on the valves trying to get as much on the valave stem as you can. then remove the side cover and pull the valve closed. turn the motor over and the cam will open it up again. repeat as needed till the valve