whats wrong with my car????????????

hey people

ive got a mk1 caddy, the problem is if i drive on the motorway!! or start giving it beans for anylonger than 30 seconds or hold it over 3000 rpm.
it just holds back and wont rev or do anythink

if i leave it on tick over for a second its fine untill i hit 3000 rpm!!!


ive cleaned the fuel tank replaced the filler neck cleaned fuel lines new carb and filter!!!!!!!!!!!!!! no change

changed points condenser timed engine with timing light!!!! no change

good compression, good spark, got air and i can smell fuel

does anybody no if there is a problem with the manuel fuel pumps!!

please help

you could always try the filler cap. i now mine breaths though that. when it was rather cold my cap froze which stoped my car running. i warmed that up and it was fine.

yeah ive had a shot at that but still no luck

pretty much same but mine does it when ive done about 30 miles at 70 (motorway driving) pull over for 5 mins an its fine??

could be carb freeze? is the fuel pump old? might b worth changing if you havnt done it. they arnt expensive anyway.

i was thinking carb freeze because ive got a different manifold and removed the heater pipes to the air box!!! il change the pump and find a new pipe and see if we get sum luck


 cheers simon!!!!!

surely the carb wouldnt freeze at a mid temperature motorway run??

ive been looking through the FAQ section an a few people had a similar problem and they changed their dizzys an it was sorted, somthing to do with the hall sensor iirc, im gunna try that and see if it helps. ill let you know how i get on

pete

How about rotor arm....if you have one with the rev limiter on it GET RID....they cause all sorts of probs....

Prowler said

How about rotor arm….if you have one with the rev limiter on it GET RID….they cause all sorts of probs….

do that! first thing i do with a new mk1.


it's not actualy freezing, it's where the fuel is too cold. the fuel needs heat to gas. connect the heater pipes all back up and see what happens.

hey ive changed the dissy and the rotor arm and guest what its done the job!!!

THE BAD NEWS IS:

but doing all of this makes it run like a bag of arse!! untill it warms up! then it runs as sweet as dream!!
GGGGrrrrrrr!!!!

its A 1600 WITH a carb!! dont think that the auto choke could be playing up now!!

if so does any body no the lay out of the vaccum pipes on the back of the carb and how the auto choke works!!!

get rid of auto choke add a manual choke conversion much better

auto choke works from the water temperature.

first flush the water system. then check that the auto choke is clean. then check the vacuum system has no leaks.

also check that the preheater (if it has one) is working.