Hello

Got mine throught the MOT today, it only needed about 6 hours work.
Oddly enough no welding?

Anyway is there a way to tell if the spring is too hard or too soft?

I think mine is wrong as it runs fine under light throttle, try any more
and it coughs while the revs pick up and then starts accelerating properly.

Im guessing its the spring as everything else looks ok and I did fit a
(red?) spring a while ago and now wonder if it might be too hard?

cheers

-anthony

sound like no oil in the dashpot.
what spring do you have fitted? it should have one of the end coils
painted. should be red or yellow, but u don't specift the engine, and
what carb u are running.

sorry just reread your post. red is a light spring (4.5oz) compared to
the yellow 8oz spring. did you fill up the dashpot after changing the
spring? generally a spring change requires a mixture adjustment.as a
general rule richer with stiffer spring and leaner with softer ones
but it depends if the spring change is accompanied by other changes in
the induction tract.

I would reccomend a yellow spring as red is too soft. How much modding have
you done to it - stage 1? sports exhaust air filter and poss inlet and
exhaust manifolds? With a red spring, when you floor it in 1st from
standing, the plunger in the carb flies up, chucking far too much petrol in
the engine, and you get a juddery if not stalling start, then it only takes
off after around 2000 rpm.

"Anthony" <anthony.goddenNOSPAMPLEASE (AT) tiscali (DOT) co.uk> wrote

Thanks for all the replies.

The engine is a 1275 MG metro lump with a 1.75 SU, K&N, and a minisport
sureflow (RC40 equivelent) exhaust.

The fault I have occurs anywhere up to about 3000rpm and clears after
that. it doesnt require flooring any thing over about quarter throttle
causes the problem.

cheers

-anthony
out and about so different email

anthony (AT) godden79 (DOT) fsnet.co.uk wrote:
Ah replying to my own posts, I changed the dashpot oil to 30W50 nd its
running much better now. Im guessing the spring is probrably ok and it
might have been the oil?

cheers

-anthony