Search found 181 matches

by JimmyC
Thu Feb 21, 2019 8:30 pm
Forum: Engine
Topic: carb leak
Replies: 0
Views: 224

carb leak

I had trouble with my carb leaking after I went through it. I found a good way to locate the leak. Dump the gas out, spray the outside with soapy water and blow compressed air into the bowl vent. The bowl vent is the thing with the screen in it right in the middle when looking down from the top. All...
by JimmyC
Thu Feb 21, 2019 8:19 pm
Forum: Engine
Topic: Carb idle jet oring?
Replies: 10
Views: 427

Re: Carb idle jet oring?

Runs great with clean carb. Must have been something in it.
by JimmyC
Thu Feb 21, 2019 8:17 pm
Forum: Engine
Topic: rev limiter, supressor
Replies: 8
Views: 386

Re: rev limiter, supressor

I took the front carb apart, cleaned it and put it back together and everything is fine again. That is the first time I had a carb problem that was intermittent.
by JimmyC
Thu Feb 07, 2019 5:34 pm
Forum: Engine
Topic: Carb idle jet oring?
Replies: 10
Views: 427

Re: Carb idle jet oring?

My carb is back together and I will try it in the morning. Except for the extra orings on the idle jets, there was no obvious problem. JIm L's instructions were great. I would only add one thing: Until you get your float level right, use the old top gasket; save your good gasket until you have the f...
by JimmyC
Wed Feb 06, 2019 9:26 am
Forum: Engine
Topic: Carb idle jet oring?
Replies: 10
Views: 427

Re: Carb idle jet oring?

Thanks for all the help. So mine had o-rings on the idle jet and has run fine until recently. I have taken them off. The o-rings onthe idle mixture screw (small type) are missing. I will put some there. My front is small screw and my back is large screw. I don't have a good picture of the large scre...
by JimmyC
Mon Feb 04, 2019 9:54 am
Forum: Engine
Topic: Carb idle jet oring?
Replies: 10
Views: 427

Carb idle jet oring?

I am sorting out a misfiring cylinder on my truck and suspect it is fuel mixture related. I removed the jet cover and pulled the jets. The slow-running jets (1-40-28, 700.1.08.405.1/60) had o-rings in their seats. The drawing in the parts book does not show an o-ring here. Does anyone know if there ...
by JimmyC
Sun Feb 03, 2019 5:04 pm
Forum: Engine
Topic: rev limiter, supressor
Replies: 8
Views: 386

Re: rev limiter, supressor

Changed the plug wires, the cap and the rotor. I am getting good spark to all four, but I am getting a misfire on #1 under load. I have tried two different spark plugs with gap set correctly. I pulled the valve cover and the valve gaps are normal. I am thinking it is a carburetor problem, mostly by ...
by JimmyC
Mon Jan 28, 2019 5:11 pm
Forum: Engine
Topic: Ignition Timing
Replies: 7
Views: 476

Ignition Timing

When I was young we use to set the timing on cars by advancing them until the engine knocked under full load then backed it off just a bit, like 2 degrees. Then we tried to start it and if it cranked hard we backed it off a bit more. Has anybody tried this? Does anybody understand why the static tim...
by JimmyC
Mon Jan 28, 2019 4:41 pm
Forum: Engine
Topic: rev limiter, supressor
Replies: 8
Views: 386

Re: rev limiter, supressor

I think I may have found the problem. I took the spark plug leads off to ohm them and they all ohmed the same at about 1 kOhm, but I noticed some damage on the #1 lead where it snaps into the wire holder at the top of the engine. I wrapped it with electrical tape and everything seems back to normal....
by JimmyC
Sat Jan 26, 2019 5:07 pm
Forum: Engine
Topic: rev limiter, supressor
Replies: 8
Views: 386

Re: rev limiter, supressor

If anyone needs to know, the rev limiter jumper needs 1/4" male spade ends.
by JimmyC
Sat Jan 26, 2019 5:02 pm
Forum: Engine
Topic: rev limiter, supressor
Replies: 8
Views: 386

Re: rev limiter, supressor

Thanks, Paul, I bypassed the overspeed sensor and it made no difference. I changed my suspicious plug and it ran great for about an hour and started doing the same thing. I pulled the plug and it looked fine. I think it did that just to confuse me. It idles well on all 4 but runs bad under load. Cha...
by JimmyC
Tue Jan 22, 2019 3:16 pm
Forum: Engine
Topic: rev limiter, supressor
Replies: 8
Views: 386

rev limiter, supressor

I am having some trouble with my truck and I suspect it is in the ignition. It is a 71o with petronix ignition and civilian cap/rotor/HT leads, and plugs. It idles fine on all four, but under load it misses and backfires through the intake. At idle I have good spark at all 4 plugs. All plugs except ...
by JimmyC
Sat Jan 12, 2019 3:38 pm
Forum: Brakes, Suspension & Tires
Topic: Pull to left when braking
Replies: 15
Views: 2708

Re: Pull to left when braking

Funny thing happened. It was time to inspect my brakes again. I pulled the drums inspected everything, put the drums back on and adjusted. When I started test driving again it pulled to one side just like it did years ago. I stomped the brakes real hard and it quit pulling. I think Jim L is right. I...
by JimmyC
Mon Jan 07, 2019 8:38 am
Forum: Drivetrain
Topic: installing differential breathers
Replies: 12
Views: 782

Re: installing differential breathers

That looks like the spot where they are shown to be in the owners manual. I did a little more reading last night and found out a bit more. First, some Unimogs use the pressure system at about 3 psi, but it is not on all the time.Second, some jeep people use a bellows on the vent. It sounds like the ...
by JimmyC
Sun Jan 06, 2019 6:51 pm
Forum: Drivetrain
Topic: installing differential breathers
Replies: 12
Views: 782

Re: installing differential breathers

I have been reading up on fording kits for military vehicles. The Humvee (and I think the LMTV) have kits where a little air pressure can be feed into all the oil-filled units. The pressure balances out the static head of the water. The idea is that if there is a little leakage, it will be oil out r...