 ATTN: Engine guys - need a solution, Just a couple of questions |
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| ahdoman |
  Feb 27 2007, 08:15 PM
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#1
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It's phonetic...Ah-D-O-Man (Audioman)  Group: Members Posts: 667 Joined: 7-November 05 From: Santa Clarita, Ca. Member No.: 5,084 Region Association: Southern California  |
2.0 engine is out of the car with trans still attached.
Question #1 - I need to check compression (I know, it's easier before the engine is out but it's out). If I connect the battery (+ & -) to the solenoid will the engine turn over? Will this damage anything. Obviously I am not trying to start it just want to turn it over to measure compression. Question #2 - If I find that compression varies on some cylinders I would like to be able to determine if it is rings or valves leaking. My plan was to put my rubber tipped blower nozzle into the sparkplug hole, pressurize and listen into case, intake or header to see if I hear a leak. The problem is as soon as I pressurize the cylinder the piston moves to the bottom of the stroke. Any ideas as to how I can keep the cylinder on TDC? |
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Replies
| Jake Raby |
Feb 28 2007, 08:34 AM
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#2
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
The leak down test is a true disgnostic evaluation, compression tests are virtually worthless...
Buy the leak down and make sure it has DUAL pressure gaiges, the cheap ones have one and they suck! Get the engine WARM and then get the engine to TDC, lock the car in gear and lock the E brake....This will hold the engine at TDC... Listen for the leakage and go from there. |
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Posts in this topic
ahdoman ATTN: Engine guys - need a solution Feb 27 2007, 08:15 PM
911quest Buy a leak down gauge the piston has to be a compl... Feb 27 2007, 08:18 PM Johny Blackstain Get the flywheel lock tool.
http://cgi.ebay.com/eb... Feb 27 2007, 08:24 PM Crazyhippy Step on the brakes....
The flywheel lock is the ... Feb 27 2007, 08:45 PM ahdoman Any way to do this w/o removing the trany?
Also ... Feb 27 2007, 08:50 PM SLITS While a leakdown test is best (you can buy a leakd... Feb 27 2007, 09:34 PM
ahdoman
While a leakdown test is best (you can buy a leak... Feb 27 2007, 09:55 PM McMark
Then you're not really at TDC. ;) Feb 27 2007, 09:50 PM |
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