TorqueDr
13th August, 2022, 04:58 PM
PD150 Boost creep
Hi guys double checked all VAC connections as i just bought it its had vac simplification its recently had a replacement bosch tandem pump so looking closer now suspecting tandem pump gasket if it even has one... havent yet taken it apart to check the seals yet but but will do that tomorrow... theres no oil level rising with diesel or anything like that.
All rubber VAC hoses have been swapped to silicone the N75 module hasn't thrown an error...
A LOT of blowby pipes do look like they're leaking oil at every join and turbo is hitting 40psi flat out... (should be max 30psi)
Tried lowering the boost to 25psi in the map and nothing changes still soaring above 35...
I've tested the VNT in the turbo with vacuum tester and it seems silky smooth...
Do Oil seals going cause overboost? Low Boost Map made no difference whatsoever
Seems like a hell of a lot of blowby not sure if the turbo is shagged or the overboost is just causing too much crankcase pressure and spitting it out the rocker cover breather... either way something had to cause the overboost and the usual Sticky VNT doesnt seem to be the problem
Can't quite figure out why its overboosting perhaps a brand new 2060vklr will solve it... I have ordered hard boost pipe kit to replace the discusting ones...
Hi guys double checked all VAC connections as i just bought it its had vac simplification its recently had a replacement bosch tandem pump so looking closer now suspecting tandem pump gasket if it even has one... havent yet taken it apart to check the seals yet but but will do that tomorrow... theres no oil level rising with diesel or anything like that.
All rubber VAC hoses have been swapped to silicone the N75 module hasn't thrown an error...
A LOT of blowby pipes do look like they're leaking oil at every join and turbo is hitting 40psi flat out... (should be max 30psi)
Tried lowering the boost to 25psi in the map and nothing changes still soaring above 35...
I've tested the VNT in the turbo with vacuum tester and it seems silky smooth...
Do Oil seals going cause overboost? Low Boost Map made no difference whatsoever
Seems like a hell of a lot of blowby not sure if the turbo is shagged or the overboost is just causing too much crankcase pressure and spitting it out the rocker cover breather... either way something had to cause the overboost and the usual Sticky VNT doesnt seem to be the problem
Can't quite figure out why its overboosting perhaps a brand new 2060vklr will solve it... I have ordered hard boost pipe kit to replace the discusting ones...