Quadrabog bogs

[iamtherealJayy]

I’m not sure what the smell is, I’ve never blown a head gasket, it smells like fuel sometimes but I didn’t get up and in it yesterday and really breathe it in. The smoke does no smell like oil, I’ve burned a lot of oil in my 78 lol. Would condensation not burn off after a while? I drove the truck all around the yard yesterday and it got all the way up to temp. The white smoke is kinda just coming out at idle, more off throttle, but clears up with more throttle. What’s one way to tell if it’s a trans issue? This is my first automatic and my only th350 currently.

 

[Snoots]

Check ALL of your vacuum hoses or, just replace them all. Run it up to operating temp and check the tranny fluid level. NEVER overfill the tranny fluid. My $$ is on the modulator.

 

[iamtherealJayy]

Unless the trans has a line on the back of the intake or something, the only visible lines are a ported to the distributor and the pcv which are both fine. The advance for distributor is a metal tube with a small piece of rubber at each end. Which side of the trans is the vacuum line on? I have no idea what I’m looking for

 

[Turbo4whl]

Unless the trans has a line on the back of the intake or something, the only visible lines are a ported to the distributor and the pcv which are both fine. The advance for distributor is a metal tube with a small piece of rubber at each end. Which side of the trans is the vacuum line on? I have no idea what I’m looking for

The factory vacuum line to the transmission modulator is also a metal tube with a short rubber hose on each end. Yes it goes to the back of the intake manifold. You can see the trans modulator if you look at the back of the trans.

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When the diaphragm in the modulator fails, engine vacuum pulls trans fluid up into the intake manifold.

Smells:

engine oil smoke = oil smell
trans oil smoke = trans fluid smell
coolant = smells like antifreeze
water vapor = no smell

 

[Turbo4whl]

If the modulator is bad, easy way to tell. Pull the rubber hose off the modulator, if oil runs out, then @Snoots bet is good, and we own him money.

 

[iamtherealJayy]

I’ll crawl under in a few and check it out. Should the engine be warmed first or would it do it cold aswell?

 

[Radiohead]

Probably leak faster warm, only from oil viscosity. Shouldn't matter.

 

[iamtherealJayy]

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So I got the rubber slid back but how ro o get the metal part out?

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This is the intake skde

 

[iamtherealJayy]

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I’m not sure what did it but there wasn’t a whole lot of white smoke this time. You could barely see it at idle and a little bit coming down from a rev. The modulator doesn’t seem to be leaking any? It doesn’t look like my chrome opens fully it’s got slop in it and it moves just a little as you can see in the one video. The trans looks a little over full maybe? I know it leaks a little but I’ve never added fluid. I’ve never even purchased atf.

 

[iamtherealJayy]

Here’s a video I couldn’t find, I found it so here’s the issue with the “bog” it rarely seems to do it anymore but it did it while still cool after I kicked off the high idle

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[Snoots]

From my view, it appears that the hose at the mod and the intake should be replaced. AND, is that port at the intake clogged?

 

[iamtherealJayy]

The port on the intake is not clogged the engine stalled the first time I took the line off. I couldn’t get the end out of the modulator, I could slide the rubber back but the metal line didn’t have enough give to come out.

 

[Rusty Nail]

That wire from the valve cover to the firewall won't cut it.
It's gotta be head to firewall.

 

[BiGSM00TYGrande]

Alright I’ve got another truck with you guessed it more problems. When I bought it I stalled the truck in the road at the guys house when I accelerated quickly, I assumed it was just because it was still cold. Nope, I had the truck up completely to temp today and it most definitely had less to do with it being cold. Truck is a 1976 k10 with a 350/350/203 combo. In neutral and in park the truck revs up fine other than a belt squeak at the quick throttle. I’m drive or reverse you pretty much have to slowly ease on the throttle or it isn’t having any of it. If I floor it you can bet it’ll stall. It’s a supposed freshly rebuilt quadrajet. I’m not sure what’s happening when you’re in gear that makes it big and stall since this is my first auto. It also bogs when under load, it won’t spin tires in loose gravel, it just spits and sputters. No obvious backfiring. The alternator doesn’t work as it should, at idle I don’t think it’s doing anything, wirh a little throttle it reads fine on the gauge.

Check the valve adjustment and timing

 

[iamtherealJayy]

@Rusty Nail i tightened the ground, valve cover bolt was loose, but I need to find a bolt for the back of the head and I’ll swap it to there.
@BiGSM00TYGrande the timing tab is bent over, I was looking the other day and it’s like it was put on backwards. So I don’t really know where about the timing is.