Need help
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Teching In
Joined: Sep 2022
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Need help I've got a mild build 5.3 with 76mm turbo im running Holly terminator x got motor built installed out and found out my pump on tranny was bad so pulled and rebuilt trans now truck smokes blue smoke after motor gets warm it didn't smoke before I rebuilt trans any ideas what I should check I don't think it's rings motor has less then 100 miles in rebuild
Could be a bunch of things, lol. First question is what trans. If a 350 or 400, are you running a modulator valve, they can become damaged, allow the engine to suck trans fluid, smoke. Are you running a PCV valve, you can suck oil thru them and smoke. Turbos can leak also. Have you looked at the plugs?
TECH Enthusiast
Joined: Dec 2017
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Could be a drain issue making th turbine leak oil. That would only smoke when the exhaust was hot enough to burn the oil. Used to happen to me with my remote mount before I put the check valve on the feed line.
Teching In
Joined: Sep 2022
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White smoke is usually coolant, black smoke is fuel too rich, BLUE is oil. TH-400 should have a vacuum line going to the modulator. Check for that again. And how long did it sit up. If a long time it could be the rings rusted and need to break free. Check compression and any that are low pour some marvel's mystery oil in those cylinders. Sitting up can also allow valve seals to dry out and crack and oil can get in that way too. Also with only 100 miles on engine the rings might not have set yet.
Thread Starter
Teching In
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It only sat for 1 month it is blue smoke so most likely oil and doesn't smoke at initial start take a minute or two before it starts if it's oil from the turbo I just Winder why it didn't do that before the trans change how would I check to see if it's from the turbo
Teching In
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Actually I would take both sides of exhaust off as the inlet side will tell you if it's engine while out side is turbo.
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Teching In
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New problem Ok it was oil from. Turbo drain engine has to much crankcase pressure imThinking all Hansbrough fixed that but the new problem is the trans won't pull it'll go good after it gets going like 2nd gear it pulls fine but I'm First I have to lay on the gas to get it to move like 5k rpms is a th400 with a tci street fighter torque converter it has a 2500 stall I used the adapter on the flexplate and everything booked up great this is the 2nd time trans has been rebuilt and problem the first time guy said it was a bad pump so he replaced it and said everything in trans is good I talked to him and he said the trans is fine that there's another problem but he didn't know what it was and I don't know what else to check anyone have any ideas
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Teching In
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Boost help Gotten most of the bugs worked out how do I build boost with terminator x if I don't have transbrake most of the stuff I read says to do boost vs time but the enable transbrake and that starts the time but I don't have a transbrake
On The Tree
Joined: Jul 2013
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You could wire it to your brake switch. That would close a circuit and activate it. Holley doesn’t know it’s not a trans brake. That way you push your break pedal down and hit the gas it gets on the 2 step. when you let off the brake pedal it’s the same as letting off the trans brake.
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Teching In
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Got the trans brake and 2step wired up to button works great but I'm still not building any boost on 2 step and boost is only coming in 2.5 seconds into a run and I'm only at 2lbs if boost then how do I get it to build faster