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Author
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Topic: Compression Test...any1?? cost??
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TriplePLAY
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Member # 948
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posted
 
 
need to find out if there is anyone on this board that has capabilities of doing a compression test?? if not, can you recommend a shop? and how much would this cost me?? thanks...
![[Confused]](confused.gif)
j
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1996 Mustang GT Vert
Philippians 4:13-
Posts: 332 | From: Bay Area, California | Registered: Feb 2002
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JoeT
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Member # 298
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posted
the tool is like $20 at sears. If you can remove spark plugs, you can run a compression test.
my advice, run motor for 5 minutes, let it cool for 10. Then do one side. Run for another 5 minutes, cool for ten, and do the other side.
if you really need help, stop by and I can show you. a remote starter (another $10 at sears) comes in handy also, cause you need to turn the motor over a few times---- and of course you disconnected the coil wire so it doesn't actually start ![[patriot]](graemlins/patriot.gif)
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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Wolf
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Member # 1723
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posted
Super easy test. Like shade said, go to Kragens/PepBoys and buy their $30-40 screw-in style engine compression tester. The kind that you just hold against the plug hole isn't accurate.
Then with a warm engine (not too hot), disconnect the coil, then one at a time, take out a spark plug, screw the tester in, crank the engine over for 2 seconds or so, record the reading, remove tester, replace plug, move on to the next one.
All your readings should be within 10% of each other if 1-2 of them are a lot lower than the others, that can indicate leaking rings, leaking head gasket, or damaged valve seats. The whole process should only take about 1/2 hour, for you unlucky bastards who have 8 cylinders to check. ![[Razz]](tongue.gif)
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64 Mercury Comet - 289ci
99 Honda Superhawk - 996cc V-Twin
Posts: 122 | From: Milpitas, CA | Registered: Aug 2002
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jmcclesk
Moderator
Member # 1355
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posted
Why do you need a compression check??? what is the problem
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Ford trained ASE master tech.
Posts: 4024 | From: marrysville | Registered: May 2002
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TriplePLAY
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Member # 948
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posted
shade- you've got PM bro, thanks.
wolf- right on! thanks for more info-- how you liking the sv?? i'm thinkin about buying one that's raced out...i had crashed last year once at Sears and at T-hill, which did me in for now. Want to race AFM in the 650 class...
jmc- i've got a vaccum leak at the moment. but before i had the leak, the car already ran like it was running on 4cyl. before the problem which includes heating ...the engine is just crap.
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1996 Mustang GT Vert
Philippians 4:13-
Posts: 332 | From: Bay Area, California | Registered: Feb 2002
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jmcclesk
Moderator
Member # 1355
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posted
dont forget to disconnect the fuel pump.
Posts: 4024 | From: marrysville | Registered: May 2002
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