Intermittent misfire cyl 1 07 Yaris 1.5 sedan

[Brighton]

If it's fuel injectors, you could try BG44K cleaner, if it's a matter of them being clogged/sticky that will help.

[Toolaholic]

Originally Posted by Brighton

If it's fuel injectors, you could try BG44K cleaner, if it's a matter of them being clogged/sticky that will help.

used Techron 3 times. It runs awesome for 30 minutes at a time then misfires heavily . Runs great again after 5 minute break. They tested injector said it tested bad. I’m assuming with a multi meter. I should of tested it but assumed it ran too good to be injector . I thought it was electrical problem somewhere. $350 labor / parts . I could of did it myself but it was $100 to diagnose it. So $250 more to fix. Oh well I put everything else on.