so i put my truck on the dyno today, it was running great before hand, but when i got it off it runs terriable.... it has no power down low at all, worse then stock and then when it finely hits boost it takes off like a jet. also, when it was on the dyno it started leaking coolant out of the water pump weep hole and then after the dyno it barely smokes at all... so im not sure whats going on.... its not knocking or vibrating or anything weird but it is the first duramax ive built so im not sure of the engines limits.... any advice would be great?
bad dyno aftermath
- Thread starter musickcbr900
- Start date
Since your truck is an 01' it could possibly be head gaskets. Ours our bad, and when you run it too hard, it pushes out coolant.
its throwing a glow plug code but that was on before this happened, im not running head studs and my dyno number were 620 hp and over 1500 torque ( not sure the dyno didnt read over that)
hhmmmm. Well I can only comment on the low hp and taking off like a jet. I took my Banks off, which requires me unhooking and hooking the wire harnesses. Once hooked back to factory, I immediately got this reaction-super slow, taking off like a jet. Called Banks and they guessed on the little pins in the harness. one in the 24?pins harness had backed off MAYBE a 32nd. I pulled on it and figured that couldnt be the reason. Put it back together and problem solved. Had to laugh, cuz the surge was scaring the hell out of me and it was just a pin that was off a freakin hair...