That explains the low numbers. For a compression test the engine needs unrestricted, maximum airflow. Wedge the throttle wide open, disconnect the coil and pull the fuel pump relay. Also, test with all sparkplugs removed. The numbers you posted do not add up IMO. If I were you, I would rent the compression tester again and do a dry, then wet test. My engine has 243,000 miles on it and compression ranges from 145-160.

The next step is to do a leakdown test. You can rent that also. After that is when to consider options such as heads, donor engine etc.

Best case scenario is blown gaskets. Worse case is cracked heads and lousy rings. As mentioned above, if on a budget a used engine can be found for 500 bucks and up. Nothing wrong with that option at all but be sure to get a warranty.

 

Alright. My bad you guys. Ill have to try it again soon.

 

Ok guys new numbers
I held the trottle as far as it could go with an allen wrench at the carb. I did I wet test and only one cylinder went up 5 psi. The rest went down. Might be a fluke. I noticed steam coming from one cylinder. I dont think smoke. It dissipated almost instantly. Couldnt smell anything.

Drivers side/ front to back
1. 110
2. 110
3. 100 +5 during wet test
4. 120

Passenger side/ front to back
1. 110
2. 120
3. 110 steam/smoke
4. 115

Nothing is below spec. Idk.

 

That's better, and since the wet test didn't show a change in results, just replace the heads, should be golden.

 

Yep still low but looks much better.

Put some new hesds on it.

Then do another compression test see how much it comes up

 

Alright. Thanks for all the help!