Question about 1999 Pontiac Grand Am GT

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2002 grand am 3.4l 1 newhead have compression only on cylinder 3 and 1 and 5 zero compression tried putting oil in no luck?

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Well thats good. if you put in oil and there is compression that tells you that your rings are bad and neeed rebuilt. i would check your timing, its possible that the exhaust or intake valve is open on the compression stroke letting the air escape.

Posted on Oct 15, 2010

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Posted on Jan 02, 2017

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1 Answer

Why is my 2002 Pontiac grand am dripping oil 1 drop every 5 seconds only while the engine is running following an oil change?


sorry would need to see it to know the problem ,but i have had it where the oil filter itself wasnt made properly and it leaks on the crimped seal on the filter .

Sep 27, 2016 | 2002 Pontiac Grand Am

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Low compression on no 5 no blue smoke clean water. What could be the problem?


two problems come to mind
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what ever ,it means that the head will have to come off to fix

Apr 24, 2015 | 2002 Suzuki Grand Vitara

1 Answer

Falcon is not firing on no.1


Assuming it is getting fuel to the cylinder, and the ignition timing is correct.....

1. Check for spark. (could be a bad spark plug). I have seen plugs that will fire outside of the cylinder, but not when installed. check carefully.
2. If there is spark, get a compression tester. remove the spark plug, replace with the tester, crank the engine a few revolutions. record the reading.
3. Remove the tester and squirt some oil into the cylinder, replace tester and crank engine again - record the result.
4. If step one reads zero...you have a burned exhaust valve or a hole in the piston, unless it is a blown head gasket which usually means there is water in the oil or visa versa. Or...if the head gasket is blown between cylinders, (no oil in water or water in the oil), then you need to do step 1 on the cylinder next to the bad cylinder. It should have a low or zero reading also.
5.If step 1 is a low reading (not zero) and step 2 INCREASES the reading. This means the rings for that cylinder are worn out and the engine should be overhauled.
6. If step 2 does not increase the reading of step 1 and it remains low (not zero), this indicates a leaking or partially burned exhaust valve.

Feb 07, 2015 | Cars & Trucks

1 Answer

1953 Ford Crestline - Flathead v8 with no compression in 7 cylinders


Don't know about your firing order, but I imagine that 1 cylinder could have its valves closed while all the rest have valves partially open. You need to see if the timing chain is broke and the cam is not turning. That would explain compression in only 1 cylinder.

The rings could have seized beyond the ability to seal with oil. Holes in pistons are another possibility. Valves stuck open could also explain no compression as a flathead may not have enough spring strength to resist rust blocking their return to a closed position.

Please comment on my info.

Apr 06, 2013 | Ford Cars & Trucks

1 Answer

How do i tell if i have blown head gasket


The signs for a blown head gasket are:
1 - The car oveheats above 195F.
2 - The cooling system is loosing coolant, low coolant level.
3 - The coolant start boiling and owerfloing from the coolant bootle.
4 - Mixture of coolant in oil, or oil in coolant.
5 - White smoke from the tail pipe.
The diagnoses to reveal a blown gasket are.
1 - Radiator compression test. Can be done at any car reapair shop for $30.
2 - Static cylinder compression test. Can reveal at which cylinder is the blown gasket (pression low, or zero). This is very important at V6 or V8 engines.

Nov 14, 2010 | 1994 Pontiac Firebird

1 Answer

I have a 2002 jeep grand cherokee high output 4.7 8 cylinder engine. i change the oil with synthetic oil every 3500. mechanic said that one of the cylinders has no compression. what could be the problem?


The lack of compression can be the result of a bad valve, a bad ring, or a bad head gasket. You'll need to do a leakdown test to deterine where exactly it is leaking.

Sep 01, 2010 | 2002 Jeep Grand Cherokee

1 Answer

2002 escape miss fire on cylinder one. took coil from cylinder 5 and put on cyliner one coil did not fire on cylinder one. took coil from cylinder one put on cylinder 5 and it did fire. 160 lbs of...


power not reaching cylinder 1 ignition coil. check electrical connections and wiring for any damage. test for power and ground at cylinder 1.
hope this helps.

Oct 07, 2009 | 2003 Ford Escape

1 Answer

#2 and #5 cylinder has no compresion


try putting in 1/2 once of oil in #2and#5 turn engine over for 2 seconds then hook up the compression gauge and check compression if there is then the cylinders got wash out if compression doesnt come up you have broke the spring or bent the valve.

Mar 19, 2009 | 2002 Buick Century

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