[WDBi]

I have a 335 with jb4 and cobb backend flash with the walbro 455lph. I installed this using Terrys diy with 225psi e85 rated lines and my lpfp only holds 50psi at idle. When i get in the gas it just drops pressure runs lean and misfires. Any ideas what this could be?

[Jeller]

Originally Posted by WDBi

I have a 335 with jb4 and cobb backend flash with the walbro 455lph. I installed this using Terrys diy with 225psi e85 rated lines and my lpfp only holds 50psi at idle. When i get in the gas it just drops pressure runs lean and misfires. Any ideas what this could be?

Make sure you used submersible line, its about $15-20 per foot fyi. You may have had a burst a hose or possibly the line running to the venturi valve at the bottom of the bucket came off. There are a couple threads on here and the other forum about this happening.

http://www.e90post.com/forums/showth...ght=venturi%2A

http://www.e90post.com/forums/showth...ght=venturi%2A

you can find the part numbers for the submersible fuel line online. I think I ended up getting mine off of amazon or something as my local stores did not have it in stock.

[racerg35335]

Probably the venturi line or you could have a kink in the line coming of the pump. My venturi line came of and my pressure sat at 32 and lowerd under wot. Also make sure that the fuel flow goes straight through T fitting. Good luck with it.

[WDBi]

it was a mixture between the venturi and the line its all fixed now and holds 80psi haha