Click on image for the lowdown. 
====
| | |
11 members (Shade Baby, GMCJammer51, jmoore, Jay R, Bucker, Gray_Ghost, 55shaker, GIJOE298, Otto Skorzeny, Ridgeback, Peggy M),
131
guests, and
0
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,157 Posts1,056,894 Members48,458 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2011 Posts: 112 Shop Shark | | Shop Shark Joined: Oct 2011 Posts: 112 | It all started with a broken choke thermostat...
While removing that unit, I broke one of the 2 mounting bolts. Then I pulled the manifolds, breaking 2 more and having to cut off a 3rd bolt, to have the original hole drilled out and tapped.
So I got the choke bolt hole heli-coiled and the manifolds completely restudded, re-conjoined, and remounted. After everything was buttoned up, my '69 wouldn't run.
With starter fluid, she would crank, rev up very high, then cut off, all within a few seconds. I found a carb/intake troubleshooting list on-line that described the exact sympton and attributed the problem to a "big" vacuum leak.
She ran before. The only change is removed and remounted carb and manifolds.
Might the manifolds not be mounted flush against the head even though everything is tightened up snug?
I have just removed the manifolds again and want to clean the head and manifold sides of the intake ports. How should that be done? | | | | | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | When bolting the intake and the exhaust together, don't torque them tight until they are torqued to the head. Even then, warpage may still be too great to seal,
Scott | | | | | Joined: Oct 2011 Posts: 112 Shop Shark | | Shop Shark Joined: Oct 2011 Posts: 112 | Very nice tip, Scott...thanks very much!!! | | | | | Joined: Mar 2004 Posts: 6,232 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,232 | Also, don't forget to reconnect any vacuum lines that were connected to the manifold...don't ask how I know this one...lol Mike B  | | | | | Joined: Oct 2011 Posts: 112 Shop Shark | | Shop Shark Joined: Oct 2011 Posts: 112 | Hahaha, Mike! Unlike me, I actually remembered to do that. | | | | | Joined: Oct 2011 Posts: 112 Shop Shark | | Shop Shark Joined: Oct 2011 Posts: 112 | Scott, the vacuum symptom is now gone and I think I have a fuel pump issue. Thanks so much for the tip! | | |
|
|
