Holley accelerator pump problems

[bmxerpete]

I've been going through accelerator pump diaphrams like crazy on my Nova, and it's driving me nuts. I don't get to drive it nearly as much as I'd like, but I start it and let it run for a while at least once a week. I've checked the pump bases and covers to see if they were bent or had debris stuck to them, but they look fine. I don't ever remember having this much trouble with them years ago, even when we would scrounge them from swap meet carbs. I wonder if Holley has changed materials or something...this is crazy. Have any of you guys experienced this or is it just my pos carb?

 

[willyschad]

Is it backfiring? It'l blow that diaphram every time if it backfires.

 

[bmxerpete]

Nope, no backfires. It actually runs really good, just leaking like a sieve at the accelerator pumps, especially the front one. Aside from potentially being a fire hazard it makes it a little tough to start. I just don't remember them leaking this bad back in the good old days.

 

[bmxerpete]

And I bought new Holley replacement diaphragms too, not generic ones. I about choked at how much the prices have gone up on Holley parts in the last few years. :shock:

 

[ricksterr1221]

my buddy jesse has a 80 dodge ram with a mildly built 360, His holly has been acting up too! His secondarys were bad right out of the box.. Hes returning it for an edelbrock. :X

 

[Anonymous]

bmx,Try this...

http://www.automedia.com/Holley_Carbure ... 000718hm/1

willys,a backfire wont ruin an accelerator pump,but it WILL blow a power valve.

 

[murraymadman]

edelbrock!!! that will fix it everytime!!! just my suggestion.