Tag Archives: Compression

Engine compression problems can cause your car to burn oil, run bad or have a check engine light. Read our free auto repair help.

Chevy S10 pickup truck wont start

My truck started up when backed up to leave it died and will not start. I think it may be the fuel pump because I tried and tried and I never smelled any gas at all. Anyway it is stuck at this store parking lot and I had drove about 4 miles to that store with not any trouble. So is’s their any kind of…

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2004 Pontiac Sunfire Misfire On Cylinder Four

I have a 2004 Pontiac Sunfire, and its got a Valve 4 misfire. I have changed the spark plugs, plug wires, coil pack and distributor. What else can I do. I think you mean cylinder 4 misfire, but that’s ok. Since you have changed most of the ignition components, I would say the misfire is not ignition related. You could possibly have a bad fuel injector,…

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Saturn Ion Timing Chain- Car Won’t Start

I replaced the timing chain on my 2005 Saturn Ion why is it still turning over really fast? ProTech: Are you sure the timing was set correctly? Yes, but It’s like it don’t have compression. Can I ask why you replaced the timing chain? Was it for that problem? The crankshaft gear broke so I bought the whole kit and replaced everything. Well sad to…

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Check Engine Light Code P0300 On GM 2.2L and 2.4L

We have been seeing quite a few problems with the GM 2.2L and 2.4L engines. Mostly on model years 2005 through 2009. This engine is very common in the Chevrolet Malibu, Cobalt and HHR. As well as the Pontiac G5 and G6. This is the 4 cylinder.  The problem I am going to talk about today is a check engine light and misfire codes. Car…

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1999 Pontiac Montana Check Engine Light Blinking

I have a 1999 Pontiac Montana code p0306 misfire detected. Check engine light blinking. Changed spark plugs, wires, ignition coil and put in new fuel filter.  We checked compression and it’s good but still the same. What else can I do to fix the problems that all happened when i fixed a gas leak. Mechanic JK What kind of gas leak did you have? Just past the fuel filter…

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2005 Chevy Trailblazer Runs Rough at Idle With No Compression

#1 cylinder in my 2005 Trailblazer has no compression. I applied air pressure and it sounded like the exhaust for no air came out f the throttle body. There was air coming out of my # 5 cylinder with the #1 at TDC. wanted your opinion on if you think it is an exhaust valve not seating? ProTech Yes, I would think that is your…

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