| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,092 Posts1,056,040 Members48,433 | | 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: Aug 2020 Posts: 22 'Bolter | | 'Bolter Joined: Aug 2020 Posts: 22 | I just installed a new fuel pump on my 216. last one worked great, but diaphram started to leak. Installed new one, and cant get fuel past it. Feel like Im missing a simple step here. Any advice? | | | | | Joined: Jan 2020 Posts: 431 'Bolter | | 'Bolter Joined: Jan 2020 Posts: 431 | Probably a dumb question, but is the pump correctly matched up to the pushrod that is actuated by the cam? I don't know if that setup applies here. | | | | | Joined: Aug 2020 Posts: 22 'Bolter | | 'Bolter Joined: Aug 2020 Posts: 22 | Thanks guys.
Long story, but got it sorted.
Truck ran fine before. I put the new pump on and started the truck. Float bowl was full. Should’ve been lots of time to get fuel up top. Truck ran until float bowl was empty and died. Thought that was weird so I cracked the fuel line on the inlet inlet side of the pump fuel leaked instantly. I cracked the line on the outlet side of the pump it was dry. Nothing. I filled up the float bowl again and started the truck left the line off the pump nothings coming out. I removed the pump and took it to the bench I rigged up a small line and bottle of gas to the inlet side and hand pumped the cam arm. Nothing. The old pump would squirt fuel 2’. I took the new pump apart to have a look and see if I could figure out what was wrong. Not seeing anything obvious but I noticed the diaphragm looked an awful lot like the one from my original pump. I decided to put the new diaphragm and spring into the old pump. Works perfect LOL
Old pump was leaking fuel past the diaphragm and out the weep hole. Alls well that ends well. | | | | | Joined: Jul 2000 Posts: 2,192 Insomniac | | Insomniac Joined: Jul 2000 Posts: 2,192 | Must be a stuck check valve in that new pump.
Got it working - that's all that matters.
Last edited by Gord&Fran; 08/24/2020 3:40 AM.
Gord 🇨🇦
----
1954 1/2 ton 235 4 speed
| | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | Welcome to the world of off shore reproduction parts.ðŸ›
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Jan 2007 Posts: 199 Shop Shark | | Shop Shark Joined: Jan 2007 Posts: 199 | In my case, my new Delphi 6 cylinder 250 fuel pump was WAY too much pressure for the stock one barrel Rochester and created massive leaking and flooding. Diaphragm and spring nowhere near factory spec and useless. Probably would work with something aftermarket. .maybe... but for sure not within spec. Fortunately I was advised to check pressure and then discovered the problem and had the old dirty pump. Cleaned it up and away we went. | | |
|
|
| |
