HASx11 Posted September 28, 2018 Share Posted September 28, 2018 (edited) I have a 2005 Subaru forester that is mifiring so much that if I put it in gear it cuts off within a few seconds. The misfire is on cylinder 4. I have replaced the plug wires in had I had an obvious break in the cylinder 4 wire and this got rid of the misfire originally. It's my 3rd car so it's only driven once or twice a week and it sat for over 3 months due to the brake lines going out. It ran rough after sitting but cleared up and it's been driven with no problem since until now. The wires were NGK Edited September 28, 2018 by HASx11 Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted September 28, 2018 Share Posted September 28, 2018 is there any oil on the plug wire boots? might have leaky valve cover gaskets. Quote Link to comment Share on other sites More sharing options...
montana tom Posted September 28, 2018 Share Posted September 28, 2018 Lots of choices) Bad plug / bad coil / bad injector / Shorting out , (view in the dark )/ valve adjustment . Checked compression ? Looked at the plug in #4 ? Is it throwing a #4 misfire code ? My guess, as it temp cleared up with new wires , is the coil. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted September 28, 2018 Share Posted September 28, 2018 Run compression test first. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.