So it has been a while since I have posted, but i am still in the same place. I got a rebuilt engine from MABBCO motors and the entire passenger side (cylinders 1-4) dont have enough compression to fire off. compression was 100 95 100 100.

I am guessing the rings are not sealing on the new engine, but i have never had this kind of issue where nothing seems to get them to seal.

Obviously I washed out the rings since they were not firing, so i changed the oil and yes i could smell a little gas in it. not a shocker with such a poor seal.

i was able to get it up to 110 psi on each by putting some ATF into each of the cylinders. when i started it up i could get a few good firings and a pop of white smoke out the tail pipes, however it quickly went back to poor compression and stopped firing.

Is there a thicker fluid I can safely put into the cylinders to try and get them to seal? i just need the damn things to run long enough to heat up and seat the rings to where they can fire on their own. I am all out of ideas.

also is there a reason all 4 cylinders on the passenger side would have this issue? seems kind of strange to have all 4 with the same issue.

 

so i need somthing thicker to put into the engine. I used motor oil first and it last about 5 seconds, then i did ATF which lasted a good 20 seconds befor it got washed out. Now i am looking to mix 50/50 engine restore with motor oil and squirting that into each cylinder. is this a bad idea? its a lot thicker which i think will help seal this thing up long enough to get some heat into it and set the dang rings.

 

I don't remember reading your other thread, but if you have a new motor and you're having issues like this with it, the only way to fix it is to tear it apart. It sounds like they put it together wrong or used the wrong rings on one side of the engine. If you have to hook a compression gauge up to a brand new motor, something is wrong.

 

I would call the engine builder and ask them what to do. Pouring random stuff in the cylinders in hopes compression will come up is asking for a warranty denial.

 

Why are you even trying to fix this yourself by dumping some oil down the cylinders? A properly built engine will have good compression even with bone dry cylinders. rings and pistons.

They screwed something up, and it's up to whoever built the engine to make it right.

 

Sounds like you got a Friday afternoon or Monday morning engine. It sounds like they lined up the rings on one side.