Shake down run!

[Dodger]

Hey all,

Took the 50 3/4 ton out on a permit before rego inspection. First time out on the road!!

All went well although sloppy in the front end. The springs are shot for sure and in fact after having another look one of the front shackles is bent. The race is on tomorrow to find a new set before the rego inspection booked for Friday arvo.

Don't like my chances but I'll have a crack.

The other issue that presented was that the engine (307 SBC), after a good run, started dieseling (run on after I turned it off).

I've been trying to figure out why and its never done it before with the short running I've down around the yard and in the shop.

I notice that the hose is missing on the vacuum advance unit and thought this could be throwing the timing out???

Or, maybe there is carbon build up or old gummed up plugs.

The other option I thought of might be that I'm running premium unleaded fuel and I should be adding lead replacement fluid to assist??

Any ideas or should I look at the above?

Was a sensational 10km run even with these new issues presenting by the way!!
Posted via Mobile Device

[mr48chev]

I'd suspect carbon buildup if the timing and idle speed check out ok. I'd be hooking up the vacuum advance though. if the hose is off and plugged it may be that the advance is bad to begin with.

I used to have to take my grandfather's 71 Dodge sedan out about once every three months and run some transmission fluid though the carburetor (dribbled a bit at a time while keeping the rpm up with the throttle) and then running up the road for a few miles until the smoke quit and the car ran smooth again. He would let it sit and idle in the driveway for hours on end for some reason but he was at the beginning of Alzheimer's then and did a bunch of strange things that we thought were due to drinking too much beer. Don't do the trans fluid thing in town though as it makes a lot of smoke for a while.

You might by for a short while by taking the shackles off and hammering them straight and reinstalling them but I'd still change them out.

[Dodger]

Thanks mate,

I'm guessing carbon build up as well but will replace the old plugs as well and run something through the system.

Any suggestions on where to hook the vacuum hose to. I have read a bit about carb v manifold ports and since I removed the vacuum wiper motor I have a manifold port ready to go. Might try that.

Your trans fluid trick sounds like it works the same as the seafoam product. I watched a YouTube video of it in use on a WRX and the smoke it blows is unbelievable!

I'll post a pic later (dark here now at 11:30pm) but I think the shackle maybe fairly straight but the bolt that fits through it is bent. I think it's called the shackle draw bolt. Will have another good look and maybe try your advice and bend back, just for Friday and the order new parts.
Posted via Mobile Device