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Might wanna try a regular plug like an Autolite Double Platinum or NGK vs the E3’s. If the wires/coils aren’t the problem.
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Originally Posted by Best4x4
(Post 638588)
Might wanna try a regular plug like an Autolite Double Platinum or NGK vs the E3’s. If the wires/coils aren’t the problem.
First picture shows the #8 plug on the left and the #6 on the right. The #8 does show some soot. https://cimg0.ibsrv.net/gimg/landrov...ce7fdd18a.jpeg The Second picture shows the #8 on the left and you can see the electrode looks fine but I swapped them and we’ll see if the misfire moves. https://cimg0.ibsrv.net/gimg/landrov...43ef16f5b.jpeg |
So after work today the SES light came on as expected, but it is still on cylinder #8. I’m at a point now that I will neeed to do a compression check and maybe a leak down test too. It’s driving me crazy since I’ve already dumped so much into this rebuild. I also found a post about another member having misfires during SAI pump blowing and it didn’t seem to have been resolved. Does anyone know if the SAI can cause the misfire? Thanks. |
"if" it was it SAI related it wouldn't be the pump, but the valve on that bank.
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I don't want to give any stupid advice here but I had a similar problem a year back. Nothing would fix it. Finally got pissed and just took it out on the highway and put the spurs to it for about 10 miles. Never had a misfire since.
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Had a misfire issue when I changed out the plugs and wires. Changed out my very expensive new plugs for the cheap OEM ones and it fixed the problem |
Originally Posted by Tito19
Had a misfire issue when I changed out the plugs and wires. Changed out my very expensive new plugs for the cheap OEM ones and it fixed the problem |
Just FYI for everybody, I was just on Rock Auto getting plugs, wires, coils, etc and they have 2 promos on spark plugs. The Autolite Iridium and they AC Delco double platinum for about $4.20 apiece with a $3 per plug mail in rebate.
Just sayin. |
Update:
Misfire is still on 8 at start up so I continued to drive the car and on Friday I got misfires on both cylinder 7 and 4 consistently. I think that’s because I used cheap coil packs I had laying around. So I made an order for the oem Bosch units and they are on their way. Also ordered new Magnecor wires and Bosch platinum +4 since I know these work well. On another note I did a compression test and got 155psi on all cylinders seems to be very even. And the truck is all apart awaiting those parts. I also hooked up a vacuum pump and tested the SAI valves and they seem to work. I’ll update once the truck is back together. |
Don't forget the injectors.
I had misfired, bought new ones and no misfires. |
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