Farken Coil Packs

[Haysey]

well after spending alot of money and time on suspension... taking the car for a drive last night and notice that its just not going the way she should up in the rev range....

Symptoms

not pulling hard in higher revs

backfiring more

lumpy idle/searching for idle sometimes

can hear miss at idle

Now im pretty sure its one of my coil packs... i know i should search but im lazy....

how can i tell which coil pack it is?

will r33 coilpacks fit in?

anyone got any 2nd hand RB20 coilpacks?

Will she die at a random time? eg crossing harbour bridge at peak hour?

Thanks all, just want to get this sorted asap as i love higher revs if you know what i mean....

Ed

[Sydneykid]

well after spending alot of money and time on suspension... taking the car for a drive last night and notice that its just not going the way she should up in the rev range....

Symptoms

not pulling hard in higher revs

backfiring more

lumpy idle/searching for idle sometimes

can hear miss at idle

Now im pretty sure its one of my coil packs... i know i should search but im lazy....

how can i tell which coil pack it is?

will r33 coilpacks fit in?

anyone got any 2nd hand RB20 coilpacks?

Will she die at a random time? eg crossing harbour bridge at peak hour?

Thanks all, just want to get this sorted asap as i love higher revs if you know what i mean....

Ed

When did you last change the spark plugs?

What plugs are you using?

What gap are they set to?

cheers

PS, turbo cars are killer on plugs, it most likely isn't the coils

[Haysey]

When did you last change the spark plugs?

What plugs are you using?

What gap are they set to?

cheers

PS, turbo cars are killer on plugs, it most likely isn't the coils

plugs got done maybe 30,000km ago

they are igk platinum

set to stock gap

should have another 40,000km in them EASY.....

shes always had a slight miss at idle even with older plugs.... so im thinking one of the coils has been on its way out for a long time now...

[Sydneykid]

plugs got done maybe 30,000km ago

they are igk platinum

set to stock gap

should have another 40,000km in them EASY.....

shes always had a slight miss at idle even with older plugs.... so im thinking one of the coils has been on its way out for a long time now...

Stock plug gap is 1.1 mm which is too large.

Try 0.8 mm for boost up to 1 bar and 0.65 mm for boost over 1 bar

cheers

[Haysey]

alrighty, where is the best place to get them regapped?

due to wat ive mentioned im really thinking its one of the coil packs....

im only running 11psi but hits 13 on cold nights

[Sydneykid]

alrighty, where is the best place to get them regapped?

due to wat ive mentioned im really thinking its one of the coil packs....

im only running 11psi but hits 13 on cold nights

1.1 mm (probably 1.2 by now due to wear of the electrodes) is a 38% larger gap than 0.8 mm.

1.1 mm is a good gap for 6 psi, you have almosty doubled that (plus a bit on cold nights).

Check out the DIY section for R&R and gapping spark plugs, it's not that hard.

cheers

[Haysey]

alrighty ill give it a go over the weekend...

if it is one of my coil packs ive been told that taking out one at a time at idle and if the idle dosent change (keeps misfiring) then thats the faulty one...

should i test that too?

[Cubes]

I don't think I've heard an R32 that doesn't have the odd ever so slight pop on idle. I'm not sure you could really call it a miss as a miss is very pronounced.

From what I've been able to fiddle with the only way to completely remove it is to richen up the idle afr to a shade over 14.

I only noticed my occasional pop on idle once I had the exhaust fitted.

[Haysey]

yeah there has always been more like a burble.... on idle....

glad to hear its normal..

now to those plugs

[Ronin]

Same sort of thing happened to me, turned out to be the ignitor. Replaced it and all was well with the world again.

[Haysey]

how can i figure out if its sparkies, ignitor or coils?

[Haysey]

took it for a drive and seems to be fine again.... weird!

[TokyoTaxi]

Ed,

If it's not happening all the time there's a pretty good chance it's the coil packs. When you get the coils out, have a good look at the clearish plastic window on the side and see if there's any burn marks, bubbles in the plastic, cracks etc, etc. Also, pull the rubber boot off the end and check out the carbon contact ( and spring ) to see if it's shot. The carbon bit contacts the end of the spark plug and can errode over a long period of time.

When I had my HR31, sometimes the car would be OK but when the coils packs got hot, the fault would show up. I replaced my set with a set that were in much better condition and problem solved.

If you do need coil packs, give me a yell. I've got a bunch of really good condition ones.

Otherwise, have a good look at spark plugs, wiring, connection plugs etc for general condition.

Hope that helps you some

[BezerkR32]

Had a couple of ignitor failures as mentioned earlier, this will give you simptoms you are experiencing, but as SKid said , start with the basics first, keep in mind the components you are talking about are around 16 years old.

Ed,

If it's not happening all the time there's a pretty good chance it's the coil packs. When you get the coils out, have a good look at the clearish plastic window on the side and see if there's any burn marks, bubbles in the plastic, cracks etc, etc. Also, pull the rubber boot off the end and check out the carbon contact ( and spring ) to see if it's shot. The carbon bit contacts the end of the spark plug and can errode over a long period of time.

When I had my HR31, sometimes the car would be OK but when the coils packs got hot, the fault would show up. I replaced my set with a set that were in much better condition and problem solved.

If you do need coil packs, give me a yell. I've got a bunch of really good condition ones.

Otherwise, have a good look at spark plugs, wiring, connection plugs etc for general condition.

Hope that helps you some

[GTAAAH]

Hey dude if you figure out the problem make sure you post back here ok. Im running pretty much the same set up and have the same problem. Had my fuel pump replaced and after that it ran alot better but now its gone crap again so i need to start with some other ideas (which unfortunately there are alot of, my mechanic is convinced that my timing belts off by a gear or 2, but im 90% sure hes had to many spanners drop on his head)

Edited June 30, 2006 by r32 gts-turbo

[Sydneykid]

Hey dude if you figure out the problem make sure you post back here ok. Im running pretty much the same set up and have the same problem. Had my fuel pump replaced and after that it ran alot better but now its gone crap again so i need to start with some other ideas (which unfortunately there are alot of, my mechanic is convinced that my timing belts off by a gear or 2, but im 90% sure hes had to many spanners drop on his head)

I had pretty much the same problem in 1 X R32GTST, 2 X R33GTS's, 1 X R34GTT and 1 X Stagea and fitting NGK copper plugs and gapping them as per the above fixed it in ALL of them.

Why look for the complicated answer before trying the simple and cheap ($20) solution first.

cheers

[mad082]

and while you have the coilpacks out to change the plugs you could tape them up. kill 2 birds with 1 stone.

[Sydneykid]

and while you have the coilpacks out to change the plugs you could tape them up. kill 2 birds with 1 stone.

But then you won't know what the real problem was.

One thing at a time

Leave the plug cover off until you are happy

Then it is simple to check the coil packs if it's not the plugs

cheers

Edited June 30, 2006 by Sydneykid

[[200]]

Does changing the gap on the spart plug have any adverse effects on the motor at all? (besides the plug itself)

[GunMetalR33]

If anyone finds out that they have a stuffed coil I have 6 x rb25 series 1 ones. I replaced them as they were no good for 19psi.