I cant get my new engine to run smooth. Seems untunable.

[Big Ray]

the kits are cheap. A decent mech should be able to do it at home. Might not be as purty, but should work fine.
The throttle shaft bushings are easy. Just take your time.

 

[1STLS1]

The last time I rebuilt a quadrajet and needed shaft bushings, I believe I made my own kit with bushings I found at Tractor Supply and 2 standard sized drill bits. It wasn't that big of a deal or very expensive.

When chasing a vacuum leak that is next to impossible to locate, see if somebody local has a "emissions smoke machine" that can check your engine for you. This is the easiest way to determine bad lower intake manifold port gaskets. You can also make one reasonably cheap from videos on YT

 

[Big Ray]

All my interwebz buddies have that cool stuff. They're just spread all over the country!

 

[1STLS1]

All my interwebz buddies have that cool stuff. They're just spread all over the country!

I saw one set up they used a cheap cigar, it's not rocket science but really the only way your going to find a leak like that

 

[Camar068]

between 3-5 hundred bucks. That's dipped, bushed, jetted and adjusted to your application, refinished and looking like new.

If I had to do it again, I'd send it off over getting a new carb or doing it myself. What I've seen to rebuild one perfectly, would be (to me) the same as learning how to weld or almost as bad as rebuilding a transmission lol.

nothing meant, just a skill/time/value thing.

 

[AyWoSch Motors]

the kits are cheap. A decent mech should be able to do it at home. Might not be as purty, but should work fine.
The throttle shaft bushings are easy. Just take your time.

Im not afraid of doing a rebuild myself, habe done light rebuilds before. Not too bad, i like that sorta thing. Will end up doing tha someday if i have the time..

 

[Frankenchevy]

The last time I rebuilt a quadrajet and needed shaft bushings, I believe I made my own kit with bushings I found at Tractor Supply and 2 standard sized drill bits. It wasn't that big of a deal or very expensive.

When chasing a vacuum leak that is next to impossible to locate, see if somebody local has a "emissions smoke machine" that can check your engine for you. This is the easiest way to determine bad lower intake manifold port gaskets. You can also make one reasonably cheap from videos on YT

They’re actually pretty cheap online. My BIL got one to find an evap leak on his Toyota. I help him with car stuff all the time so he gave it to me. I want to say it was under $100. Worked great.

 

[AyWoSch Motors]

The last time I rebuilt a quadrajet and needed shaft bushings, I believe I made my own kit with bushings I found at Tractor Supply and 2 standard sized drill bits. It wasn't that big of a deal or very expensive.

When chasing a vacuum leak that is next to impossible to locate, see if somebody local has a "emissions smoke machine" that can check your engine for you. This is the easiest way to determine bad lower intake manifold port gaskets. You can also make one reasonably cheap from videos on YT

It's not the manifold, it runs great now with a new carb.

 

[Ricko1966]

They’re actually pretty cheap online. My BIL got one to find an evap leak on his Toyota. I help him with car stuff all the time so he gave it to me. I want to say it was under $100. Worked great.

I read this on a different forum haven't had need so haven't tried it. Cap the intake put your shop vacuum exhaust hose in the tailpipe and pack a rag around it. Turn your shop vac on and start spraying everything with soapy water,just like looking for a tire leak.

 

[Albrigap]

What is your vacuum reading?
That tells the tale.

 

[AyWoSch Motors]

What is your vacuum reading?
That tells the tale.

Was 4inches.

Dont know what it is, now that its fixed

 

[Gardendelite]

What type of fuel pump?

 

[AyWoSch Motors]

What type of fuel pump?

Standard style mechanical

 

[Rusty Nail]

Yes, ive moved it around, seems happiest by ear right there. Wants to die if you either direction. Can chek the timing when its reving high, but if you hold the coke butterfly down a little, you can get it to idle down 700-800 for a few seconds before it dies, and it looks like its still set to about 10-12° which is where i had it set when it was on the stand.

I put the engine in with a chain bolted to the back of the passnger side head and front of the drivers side head, and a safety strap around the pan, why?

Wants to die if you  what either direction?

Runs great with a new carb but still idles crazy?

 

[AyWoSch Motors]

Wants to die if you  what either direction?

Runs great with a new carb but still idles crazy?

If i turned the cap either direction. Advance or retard..

But no worries, it runs great now. Turned out to be a massive vacuum leak threw a super sloppy throttle shaft bushing on the Qjet i had on there..