help me !!!!!!
Author
Discussion

jenko_380

Original Poster:

9 posts

205 months

Tuesday 23rd December 2008
quotequote all
need some help!!!!!!

i have a 1985 austin mini ritz and i have just replaced the engine (998cc) but i am havin a bit of trouble with it.
it starts fine then will run for about a minute then it will start to misfire then and then cut out???? can anyone help me? cheers jenko

Cooperman

4,428 posts

271 months

Tuesday 23rd December 2008
quotequote all
Need more information.
Does it start with full choke, then misfire and stop when the choke is pushed in?
Or does it start with choke, run on choke till warm, run warm with choke back in, then misfire and stop after some more time running and after warming up?
After it stops, does it re-start immediately with or without choke?
It could be mixture, wrong carb needle, an ignition fault like the coil or condenser, or simply incorrect basic carb settings. Possibly it's an air leak on the induction system which weakens off the mixture when warm.
One thing's for sure, if it starts, it's either mixture or ignition (that's called stating the b****y obvious)!

jenko_380

Original Poster:

9 posts

205 months

Tuesday 23rd December 2008
quotequote all
it starts fine without using choke and then will run for about 5 mins and it doesnt start straight after its cut out

jenko_380

Original Poster:

9 posts

205 months

Tuesday 23rd December 2008
quotequote all
i can now dive it for about 100-300 yards then it starts to misfire and then cuts out. and it now ticks over fine. any ideas??

Cooperman

4,428 posts

271 months

Wednesday 24th December 2008
quotequote all
Check fuel pressure and fuel level in float chamber.
Also richen it up a bit or see what happens when you pul the choke out a bit whilst driving it when it starts to lose power.
Check the static timing, points gap, change the plugs for new ones and fit new ignition leads. Change the condenser and fit another coil - borrow one if you have to.
If I had the car here it would be easy to check it out, but with not too much to go on it's difficult.
It's realy a matter of eliminating each possible cause in a methodical manner, one item at a time.
A tiop is not to try everything at once. Check each possible cause in turn, then road test until it is cured.
Good luck with this.

Peter

StevenB

783 posts

218 months

Wednesday 24th December 2008
quotequote all
Have you used your old carb or the one that came with the engine ? try fitting your old carb if you used the one that came with the engine