Cylinder Order 2001 4.6l??
#1
Cylinder Order 2001 4.6l??
Ford F150 2001 4.6 SuperCrew.
Started noticing a knock or stutter only when the engine is up to temp and driving. I took it to the dealer and they put it on the scope. They tell me that COP #4 and #7 are bad but I can't figure out what cylinders are 4 & 7. The following diagram is how I believe the cylinder order to be:
firewall
8 4
7 3
6 2
5 1
Bumper
Can someone tell me if this is correct???
THanks,
Mark Norton
Started noticing a knock or stutter only when the engine is up to temp and driving. I took it to the dealer and they put it on the scope. They tell me that COP #4 and #7 are bad but I can't figure out what cylinders are 4 & 7. The following diagram is how I believe the cylinder order to be:
firewall
8 4
7 3
6 2
5 1
Bumper
Can someone tell me if this is correct???
THanks,
Mark Norton
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#9
Problem resolved but not happy about what I found!
Checking/changing the plugs was my next step. Since this is a 2001 4.6, I didn't want to take any chances on getting this wrong if I didn't have to.
I have this one on lease and I'm one month away from the end.
I took the easy way out and changed the coil packs out with the ones I previously pulled. I put new boots on them first and now the truck runs like new.
One thing that I had trouble with was the fuel rail on the port side. The rail has a sensor on it directly over the top of the coil pack bolt for #7. I had to loosen the fuel rail to get a 1/4" ratchet underneath it. Once I figured this out it was no problem.
When I pulled #7 I noticed what looked like a very fine _SAND_ mixed with grease in the top inside and around the hole. There was some on the boot as well. I noticed some charring on the outside of the boot that indicated arcing. The sand was extremely fine and looked to be concentrated around where the boot seals to the head. I could see down into the recess and there was no visible sign of any more than what had leaked in around the top but shot it with air and vacuumed it out anyway.
I live in North Texas and I can’t see where this element came from. This stuff definitely did not blow in and magically accumulate around the boot seal.
Thanks,
MN
I have this one on lease and I'm one month away from the end.
I took the easy way out and changed the coil packs out with the ones I previously pulled. I put new boots on them first and now the truck runs like new.
One thing that I had trouble with was the fuel rail on the port side. The rail has a sensor on it directly over the top of the coil pack bolt for #7. I had to loosen the fuel rail to get a 1/4" ratchet underneath it. Once I figured this out it was no problem.
When I pulled #7 I noticed what looked like a very fine _SAND_ mixed with grease in the top inside and around the hole. There was some on the boot as well. I noticed some charring on the outside of the boot that indicated arcing. The sand was extremely fine and looked to be concentrated around where the boot seals to the head. I could see down into the recess and there was no visible sign of any more than what had leaked in around the top but shot it with air and vacuumed it out anyway.
I live in North Texas and I can’t see where this element came from. This stuff definitely did not blow in and magically accumulate around the boot seal.
Thanks,
MN
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