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Random mis fire and loss of power

Old 07-13-2016, 06:04 PM
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Random mis fire and loss of power

Hi guys new here kinda I'm usually in the jeep cj forum now but I have a question my parents have a 94 4runner that has a rebuilt motor in it. I'm thinking about trying to buy it from them but it has a random misfire and it's really random. I can start it first thing in the morning and it will mis fire really bad and sputter a bunch and it'll do it the whole drive untill I shut it off and let it sit for small period of time then it'll fire up and run like a champ and have all the power it should I'm stumped any clue or ideas on what it'd be iv never worked on newer cars iv only worked on my jeep here's a pic of the jeep
Old 07-14-2016, 04:09 AM
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100 looks and no replays you guy got no love for a jeeper
Old 07-14-2016, 04:54 AM
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What engine?
Old 07-14-2016, 04:56 AM
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It has the 3.0
Old 07-14-2016, 05:34 AM
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I am not a 3slow guy but i have see where the ignitor box needs a good ground to the body. Pull the box off the fender and sand the mounting points.
Old 07-14-2016, 09:52 AM
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I'll have to give that a try I'm hoping to get it for 5-800
Old 07-17-2016, 04:35 PM
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Well I bought the 4runner for 500 bucks ill post pic when my phone charges up a bit I let it run and listened under the hood and it's got a huge vacuum leak on the pass side right around all those small vacuum lines I'll check it out once I get it all cleaned up and no so dam moldy
Old 07-18-2016, 06:15 PM
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here it is I put a battery in it and started it up and drive it out had to use 4lo cause the brakes were stuck but yeah it's home now
Attached Thumbnails Random mis fire and loss of power-imag1543.jpg  
Old 07-20-2016, 04:59 AM
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Yuk...the horrid fade and peel prone red.
But on the other hand it was cheap. Hopefully fixing the vac leaks and sanding the ignitor earth mounts will help. Jeep us informed on the issue
Old 07-20-2016, 05:14 AM
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Yeah it's more of a maroon color and that paint is in really good shape just a few scratches no rust or peeling I cleaned out all the mold yesterday. I'm hoping to have time to work on it this weekend and wash it real good it's nice to know some ones watching my thread haha
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