spong

Its NA. I will look at the pump tomorrow I think it is an inline pump how would I tell the difference? thanks for your input.

Hey guys I have a 1995 GQ with a 4.2lt diesel motor as of late while driving at around about 3000rpm it starts a kind of surging wont go any faster then about 95km per hour and that's pushing it. Its fine driving around town but as soon as I need to go out of town it starts a kind of surging and blowing white smoke. I put a new fuel filter, air filter and ran some diesel injector cleaner through it which did not change a thing I have taken it to my mechanic where it ran fine for them. the only problem they found with it was a hose clamp was missing on the injector pump which they replaced they then test drove it and it still rand fine for them. I got it back yesterday and it has started again. I was wondering if any one on here could point me in the right direction so I can get it fixed.