mark needs help

hiya peps. im getin there with my cosworth after a few problems.
it runs fine now until it gets warm.

itl drive n boost fine in every gear except 3rd.
in slopy 3rd if i give it alot of gas there like a boost resistance, it'l spluter, then back fire.
but then when i change to 4th gear it'l boost again

any ideas peps ?
thanx

martysmartie

iTrader: (1)

Have you rewired the fuel pump?

Martin

mark needs help

no m8 the fuel pump isnt ban new but it ent the original 1.

TurboShed

Hmm... weak spark maybe.

Glenn_

iTrader: (1)

I was gonna say check your spark plugs and gap but i think if it was them it qould be doing it in every gear.

martysmartie

iTrader: (1)

It dosen't matter if it's new or not it still needs rewiring as does the fan loom also worth changing fuel filter.

Martin