Oil pressure (lack there of)

well, just trying to narrow the knock down at this point, which cylinder might it be coming from.
The engine will run rough while the wire is off, but you should also notice a difference between the wire connected and not connected.
Pull them off one at a time and gently reattach them(before you start the engine) hopefully with the engine running they will come off easily.
Don't ground yourself on the Jeep while doing this or you might get ZAPPED!

 

CT, I have since changed the oil... I cant really run the motor for any extended period of time. I am right in the middle of the rebuild, no radiator, no pedals, no seat.... It cost me around $600 to have it rebuilt, but im not sure of the quality of the work. The guy didnt tell me that he left off the plug on the back of the cam shaft. I didnt find out that it was not there till after I ran the motor :-( , and leaked oil all over the place. But it has been installed. Will running the motor without the that cap on the backside of the cam hurt it?

 

it wasn't too good for it
before you go farther, get the cooling system operational and then report back

 

thanks Jim, i'll give a try tomorrow night.

 

what would be a good resource to use to rebuild the motor? Other than whats on the cj-3b page.

 

Problem found... The rod bearings are too small. There is a ton of play on all of the rod bearings... I guess I get to learn how to replace rod bearings.....

 

time to take a micometer to the shaft and measure it.
Look on the backside of the rod bearings; you should see some numbers indicating what size crank they are for: .020 .030 .040 etc
regardless, time for very accurate measuring and then plastiguage each bearing

 

I have .02 bearing in it now... But i have to go get a good micrometer, then order the bearings... Its going to be fun, cause this is all new to me, and i get a new tool

 

If the shop that did the rebuild did a poor job, I would at least visit with the manager and let him know. Ask him what he intends to do about it?

Probally will say it is an old worn out motor and they can't stand behind thier work. But if I had a business and a customer was not happy, I would try to do the right thing.


Might ask, and see what happens. 600.00 is is alot of money for a poor job.

 

I agree with ct bring it in the only thing they can say is no for a partial refund or to fix it

 

hind sight is always 20/20.... I should have built it myself. Im going to call that guy on monday, but i doubt that i will get any money back.

 

John
If the manager of the repair shop is a good businessman, he will do the right thing.

When you visit with the shop, don’t feel the repair shop is doing you a favor for fixing something they screwed up. You paid hard earned money for a service they did not deliver. You are entitled to having it done right. An engine with a knock is not something you can jump in and drive for a 30-mile ride on a Sunday afternoon. They cheated you for not doing it right the first time. IN other words you are out $600.00 for a repair that did you no good.

Please keep us posted on your predicament. We are on your side!

Regards
Cliff

 

If your still getting a gas smell in the oil, or it poor out like water when you drain the oil, its time to check the fuel pump as you may have a bad diaphram and are leaking gas into the oil.

On my "L" head, I just took apart the oil pickup in the pan and have returned oil pressure. Assume you don't have this issue due to the engine being rebuilt.

P.S. the "W" in oil rating means "Winter". the first set of numbers is only for the viscosity (ability to flow) at a certain low temperature.

 

Final update. The rod bears should have been .050 thick, but .020 was installed. I took the crank to the guy who built the motor, and he realized what was done. He mic'd the crank and it needed to be turned (one of the rod bearings was out of round), and he ordered new bearings. I installed the new bearings and finished the motor tonight. Fired it up and no more ticking, there is plenty of oil pressure. I forgot to install the oil pressure gauge line to the motor... oops. But it ran great. Thanks guys for all the help and advise.

 

Good to hear u got her running