boost cut??

[kcosneil]

my car has started to boost cut gets to around a bar or just under and wont make anymore. ive not changed anything. only thing ive done is take the battery off.

any ideas???

[Cossie col]

try disconecting the battery for 10 mins and try again might reset something

[Dave Henshall]

when you say boost cut, does it suddenly and violently come off power or is it just not making as much boost as it used to?

[kcosneil]

when you say boost cut, does it suddenly and violently come off power or is it just not making as much boost as it used to?

yeh like u said comes off power, its like ive hit the rev limit but at like 3k-3.5k rpm.

im yet to drive the car propley as it has no tax lol but does it in 1st and 2nd.

[RetroMk1]

yeh like u said comes off power, its like ive hit the rev limit but at like 3k-3.5k rpm.

im yet to drive the car propley as it has no tax lol but does it in 1st and 2nd.

what about higher gears??

[Simon T]

could be inlet temp sensor playing up.

[kcosneil]

like i said im yet to drive it propley let so i dont know about 3rd 4th or 5th, but it used to make about 1.5bar in 1st!

[FletchCossie]

I assume your running a boost gauge? Maybe a pipe has fallen off the actuator or something and it's over boosting?

[RetroMk1]

Just check over all the pipes for splits, or loose, dump valve as well.

[kcosneil]

I assume your running a boost gauge? Maybe a pipe has fallen off the actuator or something and it's over boosting?

escos going by the standard 1. its making nowhere near the power it normally makes. feels slow as shit!!

[FletchCossie]

As Retro said check all pipes for splits could be too much air getting in the system.

[kcosneil]

i'll have a good look over in the morning taxing it in the afternoon so i'll be able to drive it propley. i'll try put a video up so u can see what i mean.

[FletchCossie]

Spray some carb cleaner over the inlet manifold and boost pipes. If he revs change there is a leak

[kcosneil]

cheers i'll have a go tomora, try the carb cleaner, check pipes over.

if it still does it i'll make a vid so people can see what im going on about.

[Dave H]

yeh like u said comes off power, its like ive hit the rev limit but at like 3k-3.5k rpm.

im yet to drive the car propley as it has no tax lol but does it in 1st and 2nd.

Mine used to do this in 4th and 5th at full boost it turned out to be the coilpack, I presume the voltage wasn't high enough and it was blowing the spark out