detonation after colder plugs?
running a d16y8 with 14b/hfmani,11psi
recently dyno tuned with crome and was running ngk's zfr5j-11's(stock plug and gap), car ran fine for around 2 months. tried a zfr6k-11(.033) recently and had detonation in cly.#1, blowing the ground strap off the plug >:(. also tried a bcpr7es(.033) and same problem in boost. would the diff. plugs and gap cause the a/f to run lean? anybody run stock plugs and gap?,thanks |
Re: detonation after colder plugs?
you dont need colder plugs for 11psi on a d series anyways, just put the stockers back in at .028"
change in heat range on the plugs is definitely constitution for a re-tune, so put stockers back in and call it good, or re-tune the car. |
Re: detonation after colder plugs?
will the .028" gap effect the tune at all?
|
Re: detonation after colder plugs?
Originally Posted by buddy4002
will the .028" gap effect the tune at all?
|
Re: detonation after colder plugs?
any other opinions on the subject?? everyone i have asked seems to have a different answer...
http://img.photobucket.com/albums/v6.../sparkplug.jpg ^cly #1plug |
Re: detonation after colder plugs?
get your injectors flow tested. i'd be willing to bed cylinder one has a clogged injector. and the only reason that plug looks dark now is because it wouldnt burn all of the fuel with the plug like that... I also like to gap my plugs way down to around 18-20..
|
Re: detonation after colder plugs?
injectors are precision 440's, bought them brand new and have been used only 2 months.
|
Re: detonation after colder plugs?
ya i went down on my gap and had to raise it a lil to make the detnation go away
|
Re: detonation after colder plugs?
wow, fuel optional?
definitely look into fuel delivery problems. |
Re: detonation after colder plugs?
^say what, fuel optional?
|
Re: detonation after colder plugs?
Originally Posted by buddy4002
^say what, fuel optional?
|
All times are GMT -5. The time now is 08:32 PM. |
© 2024 MH Sub I, LLC dba Internet Brands