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90 Legacy, Auto, non-turbo. After I drive awhile and get the car good and warm, then park it for 45 mins or so it will drop a cyl. on restart sometimes. Not all the time it's very intermitant. I have replaced the plugs and wires ran injector cleaner checked for codes, Nothing . It only does it when hot, no engine noise, starts right away so it's doesn't seem to be a fuel pressure problem. I did manage to get it to do it once while I was home so I started pulling plug wires off and found that #1 didn't make any difference. The only thing I can think of is an Injector starting to flake out, any other ideas???

 

Thanks..........Jeff

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My '90 legacy has done something similar thing before - I also replaced plugs and wires only to find out it was a plugged injector. My fix was easy - just a can of Seafoam in the tank and drive it. Fixes it every time - it happens every year or so. In my case it was amazing, pour the stuff in and drive off with it missing like crazy. In about 5 minutes it started smoothing out and after 15 was totally gone. Might be worth a try. Dave.

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My '90 legacy has done something similar thing before - I also replaced plugs and wires only to find out it was a plugged injector. My fix was easy - just a can of Seafoam in the tank and drive it. Fixes it every time - it happens every year or so. In my case it was amazing, pour the stuff in and drive off with it missing like crazy. In about 5 minutes it started smoothing out and after 15 was totally gone. Might be worth a try. Dave.

Yep, i've ruled out plugs and wires because I replced both and it still does it. When it is missing it's running on 3 cyl's. then it will clear up. I have run Redline Injector cleaner thru it, after that is when this started.

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The redline could have loosened some sludge that clogged your injectors, and it could be as simple as replacing ignition wires with a faulty one. It happens! Sometimes coils can act up once the engine becomes hot, but usually this just shuts the whole car down. Good luck.

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Have your sensors checked and trouble codes or you could be wasting money. Trying to figure a missing engine can lead you in the wrong direction and cause you to replace things that don't need to be replaced.

I've checked for ECU codes all are OK. :headbang:

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