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If your car wont start can you still run a compression test on it?
Wiki User
∙ 14y ago
Yes, IF your battery can "crank" [turn the engine over] then a compression test can be accomplished even though the engine will not start and run.
You need to remove all of the spark plugs to reduce the "drag" caused by all of the other cylinders not under test.
Attach the compression tester to one cylinder at a time, and then crank the engine for a few seconds. Read and write down the reading, and then move to the next cylinder until you've check them all.
If your battery is low, you may not get full readings, but for comparing cylinder readings, the ratios will be about the same.
Wiki User
∙ 14y ago
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You bought a ford probe it wont start mechanic said there is not enough compression to start what is the peoblem?
Bad engine Rings are worn Bad valves Do a compression test (both wet and dry) to determine which is bad
Your 5th Ave has fire but wont start?
Does it have fuel/ compression?
Did a tming change car still won't start?
If you mean you did a timing 'belt' change and still wont start, I tend to think your previous one broke ? If this is the case, its more than likely you have bent valves .. so do a compression test. If you didnt have a broken cam belt, recheck your timing marks and be sure you are not 108 degrees out
97 Chevy won't start?
if it is cranking but wont start check for spark, fuel, air and compression.
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Does it turn over? Does it have fuel, spark, compression?
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Is it getting fuel? Does it have compression?
How to tell if your timing chain is broken?
car wont run if the belt is broken ! Run a compression test.
Your 95 eclipse has fire and fuel but wont start. what could be the problem?
Compression, the rings sealing properly? get a compression tester and follow the instructions.
Why wont your 1990 Honda start you were driving downm the road and it acted like it ran out of gas and just died?
The engine needs fuel, compression and spark to run. You are missing one of those. Start with a fuel pressure test.
I replaced the coil on my 91 dodge spirit and the enginge turns over but still wont start. What should I do next?
Check for spark, fuel, compression Check ignition timing
Why wont my 96 jeep grand Cherokee start.?
Does it turn over? Does it have fuel, spark and compression?
85 Toyota land cruiser wont start when hot why?
I would check and see how much compression you have wet and dry and start from there
