Constantly replacing #1 plug
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Cross-Country
Joined: Sep 2003
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From: CENTRAL PA
Constantly replacing #1 plug
Hi , I have a 2000 Ranger 4.0. I'm getting a misfire on #1 cylinder for the 3rd time this year. I have an ob2 reader and am using Forscan light app. I get a #1 cylinder misfire and changed the spark plug and wire. It ran fine for a few weeks and started to miss again. Second time I changed all plugs and wires. Truck ran great for 2-3 months. Today it's the same issue, I changed the #1 plug and it's running fine. The plug I took out looks kind of white. Any thoughts? Thanks
Thread Starter
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Cross-Country
Joined: Sep 2003
Posts: 68
Likes: 0
From: CENTRAL PA
More information on engine. The engine is a Jasper reman with 20,000 miles on it. New plugs, wires, cats. 02 sensors 20,000 on them.
Yesterday I put a freebie coil pack on. The truck runs fine and plugged in the ob2 and got a code po102-p and po102 low MAF voltage. I'm going to do a compression test and then will be looking at fuel injectors after figuring out the low MAF voltage. MAF voltage reads 0.79 volts. Thanks
Yesterday I put a freebie coil pack on. The truck runs fine and plugged in the ob2 and got a code po102-p and po102 low MAF voltage. I'm going to do a compression test and then will be looking at fuel injectors after figuring out the low MAF voltage. MAF voltage reads 0.79 volts. Thanks
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zzzJohn
Explorer, Sport Trac, Mountaineer & Aviator
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Jan 15, 2012 12:30 PM
