Miss Fire Under Load (help!!!!!)

[sweetride]

Hi guys,

just wondering if anyone can help...

I have a R33, gts-t as you drive the car when under load the car has a miss....

I have replaced the plugs, fuel filter and gave it a full service, nothing seems to fix it, if the car is in neutral u can freely rev it to 7000rpm. Under load the car seems to miss at aroud 5 - 6000rpm, before i take it to get dynoed i was just wondering if anyone would have any sugestions or ideas to fix it....

thanks in advanced

sweetride

[Terminal]

I had the same problem, and i regapped my plugs to 0.8mm instead of the standard 1.1mm.

[wrxhoon]

Hi guys,  

just wondering if anyone can help...

I have a R33, gts-t  as you drive the car  when under load the car has a miss....

I have replaced the plugs, fuel filter and gave it a full service, nothing seems to fix it, if the car is in neutral u can freely rev it to 7000rpm. Under load the car seems to miss at aroud 5 - 6000rpm, before i take it to get dynoed i was just wondering if anyone would have any sugestions or ideas to fix it....

thanks in advanced

sweetride

Coilpacks ?

[sweetride]

Coilpacks ?

Can u regapp iridiums????

If not should i get different plugs???

I just put the iridiums in>???

Thanks

[MR R33]

a few problems it could be, coils, gap on spark plugs, or what occured with mine was the crank angel sensor. it allowed me to rev in netural, but when under load, it would missfire alot, i tried everything and in the end it was the crank angel sensor.

give that a try

[rukus]

mine had the same problems. so i took it to the dyno (unigroup engineeering), and they fixed it with a simple dyno tune

[Blitz]

What did they do on the dyno exactly Rukus?

[rukus]

What did they do on the dyno exactly Rukus?

not sure. i didnt ask coz i actually went there to get the car boosted and they noticed the big misses so they fixed it up for me.

[ecl]

took mine to the mechanic and found it was the crank angle sensor

they plugged it into the consult thingy and found out

if not, its prob spark plugs (needs regap) or coils

[Zahos]

why dont you search this topic? It is covered extensively!!!

[FATAZZ]

I had the same problem, and i regapped my plugs to 0.8mm instead of the standard 1.1mm.

this happend to me,but i was already on the dyno,i payed almost n hours labour to watch the young bloke/apprentice hit my new plugs on the ground and with a hammer.

[NYL83R]

do a search on this topic.....it will be small hairline cracks in the coil packs. this can be fixed with electrical tape.

[lismo]

i had this prob when my car got hot on long drives when i got all my bolt ons and car was much quicker. It turned out i needed a bigger fuel reg.......took a while to work out though as there was nothing wrong with my plugs or coils or anything else and did ever think it could be a fuel reg causing a miss.

[sweetride]

Hey

thanks for your help..... I took the car to UAS and the gapped the pluggs and the car seems to fine now....

Ready For some drifting