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Do you know what code(s) are stored in the computer? If not, take it to someplace like Autozone or Advance Auto and have them tell you. It makes a big difference in trying to diagnose the problem.Do you know what code(s) are stored in the computer? If not, take it to someplace like Autozone or Advance Auto and have them tell you. It makes a big difference in trying to diagnose the problem.
AnonymousMar 15, 2014
will intake manifold cause backfirewill intake manifold cause backfire
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Advice of Haynes manual is worth it . But to answer your Intake ?? if it is intake manifold gasket there are 3 of them . The upper planium is the Aluminum part the Air intake hose attaches TOO - a common GM loss of pressure gasket causing rough idle / drivebility issues . Then # 2 gasket is lower intake mounting to antifreeze carrying Intake manifold same air pressure loss. ## 3 is Intake base mounting to cylinder heads and has coolant carried in it to keep air / fuel mix charge cold . Now U see you did not remove cylinder heads so the Timing belts or heads not have been disturbed = no need to set timing . Timing is set by computer via sensors and Belt Load / Tension under Rpm . If you have loose / worn out Timing belt then engine will rattle when applying power in gear with foot on brake - it may stall under test I described and not want to restart - That would be reason to Look at resetting Timing issues . Good luck .
The ECT (Engine Coolant Temp sensor) should be located by the coolant thermostat housing or where the upper radiator hose connects to the engine. It screws in with a plug or small/short wire harness attached to it.--------------------------------To replace ect sensor:---
Drain and recycle the engine coolant.
Remove the intake manifold cover, if necessary.
Remove the exhaust crossover.
Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector.
Top of the waterkneck on the intake manifold. Pop the hood and trace the top radiator hose to the top of the engine, where it is clamped on is the waterkneck just under that is the thermostat. I think 2 bolts hold it on.
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I would look inside your distributor cap for cracks or debris. This is the genneral cause of a misfire. However, if the misfire is "rythmic" as in a timed pop pop pop, than you have a collapsed lifter or a bent pushrod. Thank you, Dana
it is most likely coming out of the weep hole at the water pump or the plastic fittings on the water pump to upper intake manifold they are black in color ands are L shaped with O-rings
could be a burned intake valve or timing advanced way to far.
Do you know what code(s) are stored in the computer? If not, take it to someplace like Autozone or Advance Auto and have them tell you. It makes a big difference in trying to diagnose the problem.
will intake manifold cause backfire
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