WebJun 19, 2011 · 6.3. Record the readings on the gauge at each stroke. 6.4. Disconnect the gauge. 6.5. Repeat the compression test for each cylinder. Record the compression readings from all of the cylinders. The lowest reading should not be less than 70 percent of the highest reading. No cylinder reading should be less than 689 kPa (100 psi). WebSep 5, 2004 · From ’85 through early ’93, the 262s used the regular small block oil pump with the 0.620" (5/8") hole for the pickup tube. In mid-’93, the pump was changed because the pickup tube was enlarged to 0.742" on the "S" and "T" trucks. After ’93, all of the engines used the pump with the big hole. PICKUP TUBES.
How To Diagnose A Hard To Find Misfire Case Study (GM 4.3L, …
WebOct 31, 2006 · www.cemaz.com. Oct 30, 2006. #4. An engine with a weak cylinder on a compression or leakdown test will usually run rough too, especially on acceleration. Its also possible to run good and check ok on compression test, but still smoke. If it blows a cloud just when it first starts up, that could mean just valve seals. The idea behind the engine compression test (in the case of a misfire condition or rough idle condition) is to find out if any one engine cylinder is not contributing 100% of its power to the overall engine output. If one or more cylinders have compression value lower than 15% of the highest compression … See more So, you've found the ‘dead’ cylinder or cylinders, what next? The next step is to do a ‘Wet’ compression test and find out if the low compression value (or 0 compression value you got) is due to bad cylinder head valves … See more This is one of the most overlooked tests to find the root cause of a misfire code, rough idle or an engine miss or a blown head gasket. Over the years, I have solved many unsolvable … See more To see the 4.3L, 5.0L, and 5.7L specific articles here at troubleshootmyvehicle.com, go to: GM 4.3L, 5.0L, 5.7L Index Of Articles. Here's a sample of the tutorials you'll find in the index: 1. How To … See more safety at food establishments
4.3L Compression Test... Truck Sluggish S-10 Forum
WebNov 1, 2000 · If we compute volume for a standard 350 Chevy gasket like the Fel-Pro 1003 with a compressed thickness of 0.041 inch, we come up with 0.515 ci, which equals 8.44 cc. WebFeb 18, 2008 · Cam is .232 @ .050. I think your compression is very good especially since the readings are so close cylinder to cylinder. A 383 builds compression a lot easier than a 350, it would be tough to get 175ish psi in a 350 flattop motor with 76cc heads and a [email protected] cam. I would bet that 350 has a smogger cam and flattop pistons. WebOct 1, 2011 · 121 Posts. Discussion Starter · #1 · Sep 30, 2011. I would appreciate your interpretations of compression test results on a 1994 Chevy 4.3L V-6 that I am trying to … the world\u0027s best anatomical charts