Hi all
I seem to have a problem on my 1994,3.0L, which over time is gradually getting worse. When driving normally around town it's non-exsistent - but when the truck is under load (going up-hill or accelerating to join a motorway) it starts to make quite a loud hissing sound from under the front end, which then dissapears when the acclererator pedal pressure is reduced. I'm no mechanic, but would I be correct in assuming that as the turbo spins faster it creates more pressure thus making the hissing sound while the trucks under load?? If so, I have checked the pipes coming from the airbox to the turbo and back to the intake and they all seem to be in reasonable condition.
Is this a known fault or can anyone give me any idea's on avenues of investigation, or procedures to eliminate certain parts from the list.
Cheers
S.
I seem to have a problem on my 1994,3.0L, which over time is gradually getting worse. When driving normally around town it's non-exsistent - but when the truck is under load (going up-hill or accelerating to join a motorway) it starts to make quite a loud hissing sound from under the front end, which then dissapears when the acclererator pedal pressure is reduced. I'm no mechanic, but would I be correct in assuming that as the turbo spins faster it creates more pressure thus making the hissing sound while the trucks under load?? If so, I have checked the pipes coming from the airbox to the turbo and back to the intake and they all seem to be in reasonable condition.
Is this a known fault or can anyone give me any idea's on avenues of investigation, or procedures to eliminate certain parts from the list.
Cheers
S.
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