VR running rough

[smarty091]

ok well got a VR Calais when i drive it in the mornings it runs ok only has a little bit of a misfire. when it gets hot it gets worse.

i have changed Plugs, leads, coil pack, DFI module, injectors.

not sure if it could be fuel pressure regulator??

anyone got any ideas???

[kingrat502]

one item that gets over looked is your map sensor vacum line..mine had a crack in the line ran rough heaps of black smoke out exhaust but engine light didn,t come on,changed the rubber line and ran great

[smarty091]

one item that gets over looked is your map sensor vacum line..mine had a crack in the line ran rough heaps of black smoke out exhaust but engine light didn,t come on,changed the rubber line and ran great

where abouts would i find this vacumm line??

[kingrat502]

best way is on the firewall you find a map sensor ,passenger side,follow where the hose goes,,,,they are like a small rubber line but go hard and brittle with the heat,,

[smarty091]

best way is on the firewall you find a map sensor ,passenger side,follow where the hose goes,,,,they are like a small rubber line but go hard and brittle with the heat,,

ok thanx alot ill check tomorow see how it goes.