I have what seems to be a fuel delivery problem, let me describe it.
Usually when cold it has a little trouble idling, I have to keep my foot in it for about 30 seconds. Once it's warm it will run but have nasty holes in the fuel delivery. Pushing on the accelerator I will sometimes feel what seems like a miss on my way over 3000 rpm. When its not doing that it runs great, no missing or anything. Once I've drove for a little bit it will buck and feel like it's shutting down then all the sudden lurch forward and run fine. Then it will go through the whole process again. I'm thinking fuel pump bailing out or maybe fuel pressure regulator? Just seeing if anyone has experienced this or has suggestions on where to start looking. I'm going to tackle it this afternoon.

Thanks guys

 

Sounds like a Fuel Pump, One time I ran my FC out of gas and it acted just like that, learchin, Bucking, Not idling. Obviously it was because I had no gas, But it is relative. If your fuel pump isnt pumping the gas it could cause that. I would Definally invest in a Walbro (SP?) 255. Just a decent upgrade over stock and they run ~$100. Check Ebay and stuff.

 

That's what im thinkin it is too. I'm going to see about getting a new one and throwing it in. Ill check into that pump you recommended, any parts store carry them?

 

Possably. Im not sure in your area. I know here in Seattle Area I can't go to auto zone and buy one. Just pick one up online.

here is one on Ebay for 78 + Free Shipping.

http://cgi.ebay.com/ebaymotors/High-...Q5fAccessories

All you do is take out ur stock fuel pump, Plug this baby in where ur old **** was and Wa-La!

 

Is it just around 3k rpm? If so, sounds more like the stutter.

 

Only when its cold. When its warm it doesn't matter what rpm.

 

Only under acceleration or load too.

 

I'd say more of a pump/filter problem then.

A stumble as you are crossing around 3500-4500 rpm is usually bad grounds.

 

Yeah I corrected the ground problem a while ago. This seems like fuel problems

 

Befroe you Crack open the tank,change the 20 year old fuel filter out for a new one!

 

fuel filter is brand new.

 

Fuel pump keeps it running now but it runs like crap. I think my injectors are bad now too. It will cut in and out while driving at any speed. Does anyone have any ideas??

The damn thing will run fine then cut out for a second then come back to normal.