this time when i added oil my front cylinder went from 75 to 150 psi and my rear cylinder went from 120 to 150psi so now i'm thinking it's the rings and not the valves... but then i wonder if i could have added so much oil that the piston splashed oil up around the valves masking any weakness / leaks in the valve ?
2007-11-26 07:00:11 · 8 answers · asked by trenton_joey 1 in Cars & Transportation ➔ Motorcycles
Here's one option.
You'll be taking the heads off to do a ring job anyhow.
While they're off, pour some gas into the intake/exhaust port (with head oriented right side up). Hold head up, over head, so you can look up at valve faces (on combustion chamber side). If valves are sealing good, you shouldn't see any gas leaking past valve seat going from the port into combustion chamber.
It's worked for me in the past.
2007-11-27 02:03:12 · answer #1 · answered by strech 7 · 0⤊ 0⤋
Put some compressed air into the engine through the sparkplug hole. Make sure both valves are shut. Listen at the crankcase (oil Fill) exhaust pipe and carb for leaking air. That will show whats bad.
2007-11-26 09:18:06 · answer #2 · answered by Riverfurm 3 · 1⤊ 0⤋
As others mentioned you're fantastic to maintain real on working it. once you extra oil you helped seal up rings. I usually do a heat compression try because of the fact the conventional operation of the engine is heated no longer chilly. you're exhibiting low placed on for an engine with over 200k on it meaning its been nicely maintained save up the mainenance and you could see yet another 100k from it.
2016-12-16 19:07:28 · answer #3 · answered by ? 4 · 0⤊ 0⤋
you've done a compression test, and got bewildering results. now its time for a leakdown test. someone earlier outlined what the process is but to refresh, pump compressed air into the cylinder and listen for leaking air from oil fill, exhaust, carbies and the radiator, this tells you where the leak is comming from. how much leaks over how long will tell you how bad the issue is.
2007-11-26 09:26:11 · answer #4 · answered by Anonymous · 0⤊ 0⤋
You most likely have a problem with rings,as it would be unusual for valves to leak in both cylinders.It is a possibility though.I haven't seen your other questions so can't say more.
2007-11-26 07:34:26 · answer #5 · answered by Ninky Nonk---In The Night Garden 4 · 0⤊ 0⤋
leakdown test will tell exactly whats up or tear it down and do a top end while you got it apart.
2007-11-26 10:50:34 · answer #6 · answered by Anonymous · 0⤊ 0⤋
If your not understanding what's wrong, then it's time to take it to a mechanic to have them fix the problem.
2007-11-26 07:11:24 · answer #7 · answered by Date Dr. 6 · 0⤊ 2⤋
No, replace your rings.
2007-11-26 10:07:44 · answer #8 · answered by socalhillbilly 3 · 0⤊ 0⤋