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| | | Forums66 Topics128,090 Posts1,056,345 Members48,442 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Feb 2004 Posts: 29,826 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,826 | Instead of another compression test, let me suggest a cylinder leakdown test. Following the firing order by looking at the distributor rotor, get each cylinder to the top of its compression stroke, lock the crankshaft by putting the transmission in gear and chocking the wheels front and rear, or putting a couple of pairs of vise grips on the flywheel at the bell housing, put air pressure into the spark plug holes with an adapter made from a spark plug shell and an air hose quick coupler. Listen for air leaks at the carburetor (intake valve) the tailpipe (exhaust valve) and the oil fill cap (piston rings). If you use an air pressure regulator set to 100 PSI with no air flowing, the pressure drop will give you a reading of the percentage of leakdown for each cylinder. I've been using that test for 50+ years. For instance- - - -a pressure reading of 90 PSI on a cylinder with the air pressure in it would indicate a 10% leak rate. Much more accurate than a simple compression test. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
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Entire Thread
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In line 6, 250 Chevy
| glennj3 | 11/24/2025 5:25 AM |
Re: In line 6, 250 Chevy
| Joe H | 11/24/2025 2:19 PM |
Re: In line 6, 250 Chevy
| glennj3 | 12/08/2025 2:33 AM |
Re: In line 6, 250 Chevy
| Hotrod Lincoln | 11/24/2025 4:10 PM |
Re: In line 6, 250 Chevy
| BC59 | 11/24/2025 9:03 PM |
Re: In line 6, 250 Chevy
| glennj3 | 11/30/2025 1:17 AM |
Re: In line 6, 250 Chevy
| Tronman | 11/25/2025 11:30 PM |
Re: In line 6, 250 Chevy
| Hotrod Lincoln | 11/28/2025 5:14 PM |
Re: In line 6, 250 Chevy
| glennj3 | 11/30/2025 1:19 AM |
Re: In line 6, 250 Chevy
| Hotrod Lincoln | 11/30/2025 2:53 AM |
Re: In line 6, 250 Chevy
| glennj3 | 12/04/2025 10:17 PM |
Re: In line 6, 250 Chevy
| Hotrod Lincoln | 12/04/2025 10:33 PM |
Re: In line 6, 250 Chevy
| Joe H | 12/05/2025 2:34 PM |
Re: In line 6, 250 Chevy
| glennj3 | 12/07/2025 1:53 PM |
Re: In line 6, 250 Chevy
| Joe H | 12/07/2025 2:11 PM |
Re: In line 6, 250 Chevy
| Tronman | 12/08/2025 4:55 AM |
Re: In line 6, 250 Chevy
| glennj3 | 12/09/2025 10:54 PM |
Re: In line 6, 250 Chevy
| Hotrod Lincoln | 12/09/2025 11:15 PM |
Re: In line 6, 250 Chevy
| glennj3 | 12/10/2025 4:33 PM |
Re: In line 6, 250 Chevy
| Bill Hanlon | 12/10/2025 2:38 PM |
Re: In line 6, 250 Chevy
| glennj3 | 12/10/2025 10:33 PM |
Re: In line 6, 250 Chevy
| Hotrod Lincoln | 12/10/2025 11:27 PM |
Re: In line 6, 250 Chevy
| glennj3 | 12/11/2025 4:12 AM |
Re: In line 6, 250 Chevy
| Joe H | 12/11/2025 2:31 PM |
Re: In line 6, 250 Chevy
| glennj3 | 12/11/2025 5:10 PM |
Re: In line 6, 250 Chevy
| glennj3 | 01/02/2026 11:37 PM |
Re: In line 6, 250 Chevy
| Bill Hanlon | 01/02/2026 11:54 PM |
Re: In line 6, 250 Chevy
| glennj3 | 01/03/2026 5:10 AM |
Re: In line 6, 250 Chevy
| Phak1 | 01/03/2026 1:58 AM |
Re: In line 6, 250 Chevy
| glennj3 | 01/03/2026 5:20 AM |
Re: In line 6, 250 Chevy
| WICruiser | 01/03/2026 1:09 PM |
Re: In line 6, 250 Chevy
| Joe H | 01/03/2026 2:24 PM |
Re: In line 6, 250 Chevy
| glennj3 | 01/03/2026 5:37 PM |
Re: In line 6, 250 Chevy
| klhansen | 01/03/2026 6:08 PM |
Re: In line 6, 250 Chevy
| glennj3 | 01/04/2026 5:59 PM |
Re: In line 6, 250 Chevy
| Hotrod Lincoln | 01/03/2026 6:33 PM |
Re: In line 6, 250 Chevy
| glennj3 | 01/04/2026 5:58 PM |
Re: In line 6, 250 Chevy
| Hotrod Lincoln | 01/04/2026 6:11 PM |
Re: In line 6, 250 Chevy
| glennj3 | 01/04/2026 8:51 PM |
Re: In line 6, 250 Chevy
| klhansen | 01/04/2026 9:44 PM |
Re: In line 6, 250 Chevy
| glennj3 | 01/06/2026 3:39 AM |
Re: In line 6, 250 Chevy
| Hotrod Lincoln | 01/04/2026 11:34 PM | |
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