serious power loss problems

[CMF_jonny A]

i race a 1994 k11 nissn micra.. we only use 1st and 2nd gear.. the car was running 100% a few weeks ago.. i took it out last weekend the car was loosing serious power.. we replaced the alternator , throttle body , spark plugs, + leads ,distributor.. and its got worse i need help asap as my next race is in 11 days.. many thanks jonny

 

[CMF_frank2]

fuel pressure problem maybe jonny ?
you could wet the air filter (with petrol lol) and see if it improves ?

 

[CMF_jonny A]

we have a gti golf fuel pump on it.. because we dont run a standard petrol tank.. and we cant use the standard pump.. do you know what psi pressure it takes to run a 1L micra.

many thanks

 

[CMF_frank2]

the stock pump will supply upto 70 psi i believe jonny but anything over 3 bar (45 psi) is returned to the tank via the p/r/v on the end of the fuelrail eh

 

[CMF_jonny A]

thanks i will try that...

i meant to mention . we have a power kill switch on the car .. when the car is getting too hot IT WONT work when the car is COOL it will work could this be an ecu problem..

 

[CMF_frank2]

jonny A WROTE:

"thanks i will try that...

i meant to mention . we have a power kill switch on the car .. when the car is getting too hot IT WONT work when the car is COOL it will work could this be an ecu problem..

what is it wired to ? (what does it cut ?)

 

[CMF_jonny A]

cuts off all power stops every thing so no power is getting to any thing

 

[CMF_frank2]

jonny A WROTE:

"cuts off all power stops every thing so no power is getting to any thing

the alternator must be feeding it then for some reason (and overvolting without the ballast of the battery)

 

[CMF_jonny A]

even with alternstor off it still is doing the same thats what is leading me to the ecu could there be a fault could it have got wet /
??