712 m popping at exhaust

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Rookie
United States of America
Posts: 30
Joined: Tue Nov 24, 2015 2:24 pm

712 m popping at exhaust

Post by Rookie » Sat Apr 01, 2017 2:12 pm

I just recently acquired my pinz and changed all the fluids and washed the motor out and forgot to cover the distributor and then it started popping then wouldnt start like it was out of timing this morning i uncovered the cap and there was moisture in it so i sprayed wd 40 in it and it got better starts right up now but still pops at idle not when in motion has great power it does have a petronix ingnition and of course all that popping caused my muffler to crack open a little so i have to fix that what do u guys recomend from here is the dizzy still have moisture in it thats why its still popping at idle

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audiocontr
Posts: 1744
Joined: Fri May 01, 2009 1:30 pm
Location: Detroit Motor City

Re: 712 m popping at exhaust

Post by audiocontr » Sat Apr 01, 2017 4:14 pm

Not surprising. They run weird until warmed up. Make sure you're giving it proper choke, and be mindful of ethanol gas. You may need to clean out the carbs. warm it up and check the popping

Beyond that, you may have a worn out elbow in the distributor vacuum line. Its not pure vacuum, so do NOT replace with a new one... there is a restriction ball in there that keeps the line at a low enough vacuum to remove condensation, but not enough to pull oil.

You may need to adjust your carbs

You may need to check your timing

You may have exhaust manifold linkages that have come loose, creating the popping



All and all, it could be a lot of things, but don't get worked up over it. These trucks have gremlins. Chasing little things may create bigger things
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whitesik
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Location: Indiana, U.S.A.

Re: 712 m popping at exhaust

Post by whitesik » Sat Apr 01, 2017 5:20 pm

Well I am new to the pinzgauer and forum but have managed to get some repair time behind me now. I had a very similar problem, spending hours dealing with the carburetor and various things as mentioned above. Two things promptly fixed it: a new distributor cap and I adjusted the petronix gap to the recommended distance. It was a little wide. started right up, no backfiring.

So now I can say I have officially given anecdotal advice on the forum.
75 Swiss 710K
Not so new owner but still a novice

Rookie
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Posts: 30
Joined: Tue Nov 24, 2015 2:24 pm

Re: 712 m popping at exhaust

Post by Rookie » Sat Apr 01, 2017 6:55 pm

Thanks guys for the responses as you know when its youre first is always a puzzle putting piecs together i will start with the easiest which is replace the dis cap and go from there like i said it ran fine on thursday it was just after the clean up that it started acting up

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