fuel starvation

[Cerberosa]

ive got a fuel starvation problem in my 1500 spitfire
i know this can be a fairly varied problem
but is there a typical "spit" problem for it something common?
It usualy happens under hard cornering, not that i do such things of course...

thanks for any replys
really must sort out my membersship with the triumph lot! lol

cheers

cerbs

[stevie_a]

My first thought is fuel filter ,pump or rust in the tank???

Edited by stevie_a on Saturday 13th November 09:03

[itiejim]

Are you actually getting sufficient fuel to the carbs?

They do suffer from fuel evaporation when hot though - or is it all the time?

A bit more info required I think.

[Hammer67]

My Vitesse used to suffer with vapourisation, sorted it by wrapping the engine fuel lines with heat reflective stuff from, IIRC, Demon Tweeks? and fitting alloy heatshields under the carbs.

Your problem sounds different though. I`d check the float chambers and the tank for crud.

[Cerberosa]

It dosnt seem to metter what the engine temp is, will do it from cold on the first few bends out the village, it does seem to do it more maby when hotter but maby this is because im travelling more progressivly once the engine is warmed.

When it happens you cant get any aceleration, if anything it decelerates and the engine sounds like its ticking over at half of what it should be, its a real labour, then it clears it throat an its off again.

the engine itself has only just been reconed, and all the ignition side has been replaced (deffintly not the ignition!!)

i hope that helps, i tried to take my mechanic out in it, but of course it diddnt do it!!

cheers
cerbs

[Hammer67]

If you`ve replaced all the ignition components check your rotor arm. There are some duff ones in circulation. Make sure the top brass arm is tightly fixed in the plastic especially if it`s riveted on. Best bet is to buy a red one from the TSSC club shop.

[//j17]

Do you actually KNOW it's fuel starvation or does it just run really badly from time to time?

Based on the description of the engine suddenly struggling and loosing power one thing to try is giving the choke a yank next time it happens.

I had similar sounding issues in my Spit. and pulling the choak made things better, which pointed to running lean and an air leak. In my case it turned out one of the breather hoses had perished right where it passed through a jubilee clip (ironically there to ensure no air links at the loose push-on connection). Most of the time the lip of the split was under the clip and held it closed. A bit off revving/hitting a pothole/hard cornering could move things about enough to pop it out of the clip, opening a huge hole for air to rush in engine side of the carbs.

The hoses all looked and felt fine - till I took the clips off and gave the hose a yank to pull it off and the bottom inch stayed there leaving me holding the rest.