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Old 11-02-2016, 06:58 PM
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Head Cylinder

Hello everyone I have a 1991 Ford Explorer V6 4.0L Manual Transmission. 4door. Ok I replaced the head gasket set and intake with a new head cylinder installed on the driver side. Put it all back together and it didnt want to start right away but it did after quite some time and it just sounds rough. Could I have put the rocker arm in wrong? Its self adjusting I was told. And I hand tighten them. Backwards? Upside down? They seemed basic to install back in 3 bolts. But the car sounds rough like theres a vacuum leak on the cam or intake like there isnt air fuel mixture properly or something. And like theres a loud scatching knock coming from the intake. My friend said it was backfiring after some time of it running. it kinda goes away idling higher but still rough. What do i do?

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Old 11-02-2016, 07:30 PM
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Have you checked to make sure you put your plug wires back on in the correct firing order? That's the first thing i'd do.
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Old 11-02-2016, 10:02 PM
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1. Read or have read the computer for codes set by a system problems.
2. Next I would pull the plugs and see if I could see a plug fouled or such.
3 Check your wires make sure their going where there supposed to go.
4. do you have all of your injectors plugged in?

You need to look at the basic things first. Especially anything you have done before. A simple mistake like a mis aligned intake could drive a sane man crazy. a simple rookie mistake can drive you in circles.

My recommendation is to take a piece of paper and write down everything you do and the results it got. That helps you keep focused and tackle 1 problem at a time.

Good Luck
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