lallasro Posted October 13, 2015 Share Posted October 13, 2015 hey guys!I have a problem with the FJ1200. when is getting hot, is starting misfire. this is not happening with the engine cold. I check the spark plugs and everything seems to be ok here. can be the ignition coil don`t working properly at hot temperatures?thank you! Link to comment Share on other sites More sharing options...
Moderator drewpy Posted October 13, 2015 Moderator Share Posted October 13, 2015 how hot is it getting? maybe a weal mix causing the issue 1 Link to comment Share on other sites More sharing options...
lallasro Posted October 14, 2015 Author Share Posted October 14, 2015 well, is not going very hot, after 1-2 min after I start the engine is start having misfire, sometime take longer if outside is cold. this is why I was thinking is the coils because in cold wheater the coils take a bit longer to get hot. I will check the mix. Link to comment Share on other sites More sharing options...
slice Posted October 14, 2015 Share Posted October 14, 2015 Lassy, just a thought but had a similar thing on my FJ, changed both coils and never had it again. Think your best bet is to do the same. Is it on all 4 or just a pair of cylinders? Link to comment Share on other sites More sharing options...
lallasro Posted October 14, 2015 Author Share Posted October 14, 2015 (edited) well, hard to say this slice ) probably I got misfire on all. the spark plugs look identical. I just change them so I can`t "read" them very good. I order both coils to be sure Edited October 14, 2015 by lallasro Link to comment Share on other sites More sharing options...
Moderator drewpy Posted October 14, 2015 Moderator Share Posted October 14, 2015 well, hard to say this slice ) probably I got misfire on all. the spark plugs look identical. I just change them so I can`t "read" them very good. I order both coils to be sure Aldi do an infrared thermometer ATM, may be worth getting one to measure heat in coils and exhaust etc 1 Link to comment Share on other sites More sharing options...
JimR Posted October 16, 2015 Share Posted October 16, 2015 check the compression .. it is unlikley but remove the option of worn valve seats ... this can happen if the valve clearances are not done on time and to be fair the 30k miles between checking the clearances does seam excessive 1 Link to comment Share on other sites More sharing options...
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