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miss firing r32 GTR

7heavn
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7heavn Experienced

7heavn

Posted
Posted

My GTR is missing at about 4,500-5,000rpms pretty badly so bad infact that I lift off straight away when it happens . Pulled plugs out they were NGK BCPR6EY 11

(11 meaning 1.1m gap) . I thaught this was the problem so replaced with a new set of the same plug but gapped at 0.8m but still has the same missing problem.

I've also tried disconnecting a coil pack at a time while the car is running to see if the idle didn't change when one of them was disconnected but as each one was unplugged the idle dropped they seemed to be all ok.

The car is fitted with z32 air flow meters , do these have problems like the standered units would it be worth my while to take them out and clean them with contact cleaner ?.

Car is going to the mechanic next week but just interested to know what else could be causing my problem?. The car has a few bolt on mods including 2530's , PFC , z32 airflow meters like stated .

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Guest two.06l

Guest two.06l

Posted
Posted
My GTR is missing at about 4,500-5,000rpms pretty badly so bad infact that I lift off straight away when it happens . Pulled plugs out they were NGK BCPR6EY 11

(11 meaning 1.1m gap) . I thaught this was the problem so replaced with a new set of the same plug but gapped at 0.8m but still has the same missing problem.

I've also tried disconnecting a coil pack at a time while the car is running to see if the idle didn't change when one of them was disconnected but as each one was unplugged the idle dropped they seemed to be all ok.

The car is fitted with z32 air flow meters , do these have problems like the standered units would it be worth my while to take them out and clean them with contact cleaner ?.

Car is going to the mechanic next week but just interested to know what else could be causing my problem?. The car has a few bolt on mods including 2530's , PFC , z32 airflow meters like stated .

question:hows your fuel supply???

wrxhoon Grand Master

wrxhoon

Posted
Posted

it could be the coil packs , they break down under load and more so when they are hot .

does it always do it ? only when its hot ?

other than that check to see if your injectors are maxing out , it could be them or fuel pump .

Ronin 09 Grand Master

Ronin 09

Posted
Posted

I have the same problem. Only happens when hot.

Does your car hard start when warm? Mine does, and the misfiring is only under load, getting worse when hot.

Because it hard starts when hot, only misfires under load (I have new plugs @ .8mm), I am going to try new coils - next weekend. Will let you know how I go.

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