datzenmike Posted April 23, 2014 Report Share Posted April 23, 2014 Squirt a couple of teaspoonfuls of motor oil in and retest. If the compression jumps up then the rings are bad on #3 Quote Link to comment
Hooligan Posted April 23, 2014 Author Report Share Posted April 23, 2014 Yeah Mike that was with oil in the cylinders. Gonna pull the motor and do a full rebuild Quote Link to comment
flatcat19 Posted April 23, 2014 Report Share Posted April 23, 2014 What were the numbers dry? Quote Link to comment
q-tip Posted April 23, 2014 Report Share Posted April 23, 2014 SON OF A BITCH!!!! There, I said it for ya man 3 Quote Link to comment
Hooligan Posted April 23, 2014 Author Report Share Posted April 23, 2014 Its all good man.... keeps me on my toes Quote Link to comment
datzenmike Posted April 23, 2014 Report Share Posted April 23, 2014 SON OF A BITCH!!!! I always here saying that 3 Quote Link to comment
ggzilla Posted April 23, 2014 Report Share Posted April 23, 2014 Engine will start and run well with 122 psi Quote Link to comment
dr.feltersnatch Posted April 23, 2014 Report Share Posted April 23, 2014 If it was even maybe. That much difference between cyl I wouldnt think it would run very smooth. Quote Link to comment
Driftease Posted April 23, 2014 Report Share Posted April 23, 2014 Either way the engine should start and put around a little. That is a rather large spread of compression indicating major problems, still it should be able to run however badly. Quote Link to comment
dr.feltersnatch Posted April 23, 2014 Report Share Posted April 23, 2014 Agreed Quote Link to comment
q-tip Posted April 23, 2014 Report Share Posted April 23, 2014 I agree with the above, it may have low compression but it still has enough to do SOMETHING that resembles life Quote Link to comment
datzenmike Posted April 23, 2014 Report Share Posted April 23, 2014 Welllll...... double checked and the engine has spark. Valves are adjusted... then, well then.... did a compression test. Cylinder 1 - 192, Cylinder 2 - 155, Cylinder 3 -122, and Cylinder 4 - 145 The cylinders should be within 10% of each other or it will chug. Yes even 100 across all cylinders will run smooth but lack some power. Quote Link to comment
Driftease Posted April 23, 2014 Report Share Posted April 23, 2014 Could be carbon blocking the valves (some of them) open. My advise would to be getting it running first, romp on it a bit then recheck compression before pulling the motor. If your valves were extremely loose before adjusting them that would be a good indicator of something not allowing the valves to close all the way 1 Quote Link to comment
banzai510(hainz) Posted April 24, 2014 Report Share Posted April 24, 2014 If your valves were extremely loose before adjusting them that would be a good indicator of something not allowing the valves to close all the way????? You mean valve lash too tight I think. going by the readings it should run. Its soemthing else. dont pull motor what timming light say in the middle of the timming plate.???? if one has to crank the dizzy hard to gt it in time then that wherew your proplem is . reck the spindal or recenter your timming plate under the dizzy.So you have more adjustment when you center the timming plate on the front cover 1 Quote Link to comment
Hooligan Posted April 26, 2014 Author Report Share Posted April 26, 2014 Well guys... I appreciate all of the advice. I have Sunday off so I will spend the day digging into this before pulling the motor and see what I can find 1 Quote Link to comment
ggzilla Posted April 26, 2014 Report Share Posted April 26, 2014 Pull the motor? Best to troubleshoot it while installed. Much harder to do once its out. 1 Quote Link to comment
Driftease Posted May 3, 2014 Report Share Posted May 3, 2014 If your valves were extremely loose before adjusting them that would be a good indicator of something not allowing the valves to close all the way????? You mean valve lash too tight I think. going by the readings it should run. Its soemthing else. dont pull motor what timming light say in the middle of the timming plate.???? if one has to crank the dizzy hard to gt it in time then that wherew your proplem is . reck the spindal or recenter your timming plate under the dizzy.So you have more adjustment when you center the timming plate on the front cover By the valves being loose I meant excessive clearance between the valve and rocker due to the valve not closing all the way, too tight would be the rocker holding it open. Quote Link to comment
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