Misfire help required??? - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

NigelR32 · 15th July 2006, 08:55 PM

Hi all,

Took the GTR for a spin tonight, after spending all day rebuilding the front Driveshafts and Brake Calipers.

After approximately 8 miles I noticed a misfire, the kind that makes the car sound like a Scooby. The misfire then cleared, and came back again a few times during my 20 mile run. It seems to happen just after I give the car some beans, but no more than 5000rpm. Also, it idles fine???

I'm thinking AFM, Temperature Sensor, Fuel filter,Fuel Pump..........anyone got any better ideas, from previous experience??

I NEED to go to JAE next weekend, and only have tomorrow, (Sunday) to sort this. I have all the parts I could possibly need, so please, any advice would be very greatly appreciated

GT-Rich · 15th July 2006, 09:28 PM

Coil/Spark Plug? Those would be the first 2 things to check if missing..

matty32 · 15th July 2006, 10:52 PM

mine was a little like that coilpacks and plugs , re earthed it all too works a treat

inFOCUS · 15th July 2006, 11:25 PM

yep mine had a cracked coil pack which had the same symptoms.

NigelR32 · 16th July 2006, 12:33 AM

Thanks for the info guys. The thing that puzzles me is the fact that it only does it after it's been booted??

NigelR32 · 16th July 2006, 10:14 AM

I have NGK '8' plugs in the car, I'm gonna go and fit the 5's I have from my old car, just to see if that makes a difference. Is a tracking coil visible when removed??

I could just go out and replace everything, but i want to "find" the problem.

Regards

matty32 · 16th July 2006, 11:11 AM

one of the coils on my 32 was split and visible, i would say that is your problem

tarmac terror · 16th July 2006, 11:52 AM

Hi NigelR32, strangely, I'm having the same kind of problem mate. Its pretty intermittent but seems to rear its head more after a 'blast'. I'm taking mine to Abbey on thursday so they can work their magic on it. I know that you need it fixed ASAP but i'll let you know how I get on just in case your having a 'mare finding the problem.

TT

NigelR32 · 16th July 2006, 12:27 PM

Well, I thought I'd have a look this morning. I changed the Coil loom, and then went on the same journey as yesterday, driving at about the same speeds.

I then did another quick blast on the Motorway, and fingers crossed, the problem seems to have gone away!!

I think I'll give her another go this afternoon, just to confirm..........watch this space..........................

Regards and thanks for the tips guys.

NigelR32 · 16th July 2006, 12:30 PM

Quote:

Originally Posted by matty32

one of the coils on my 32 was split and visible, i would say that is your problem

I checked the Coils, and they look newish,(Shiny black paint and very good condition/clean rubbers). They certainly look much better than the spare set I've got........

Regards

whoflungdung · 16th July 2006, 12:31 PM

this problem is usually the ignition module breaking down

as i had the same thing

NigelR32 · 16th July 2006, 12:36 PM

Quote:

Originally Posted by whoflungdung

this problem is usually the ignition module breaking down

as i had the same thing

Do you mean the Amp, the finned Ali block on the Cam Covers?

Regards

matty32 · 16th July 2006, 12:48 PM

yep he does

swap over the coils and see if it makes a difference mine were nice and shiny but had a small split in one of them

Daz · 16th July 2006, 01:07 PM

I've joined the league of mis-fires. Misses initially when first pulling away when cold ... but now also misses at any point in the rev range. Can drive through it ... but it splutters now and then.

NigelR32 · 16th July 2006, 01:47 PM

I think the secret here is to get yourself some spare ignition components sat on the shelf. I can assure you, it makes life a lot easier when you can run through a process of elimination.....like just now, noticed oil under the transfer box, I just knew it was gonna be the rubber boot around the gearstick, and hey.............I had a new one in my spares box

Regards

15th July 2006, 08:55 PM	#1 (permalink)
NigelR32 GTR Register Member Join Date: Jul 2002 Location: RB26ville Posts: 916	Misfire help required??? Hi all, Took the GTR for a spin tonight, after spending all day rebuilding the front Driveshafts and Brake Calipers. After approximately 8 miles I noticed a misfire, the kind that makes the car sound like a Scooby. The misfire then cleared, and came back again a few times during my 20 mile run. It seems to happen just after I give the car some beans, but no more than 5000rpm. Also, it idles fine??? I'm thinking AFM, Temperature Sensor, Fuel filter,Fuel Pump..........anyone got any better ideas, from previous experience?? I NEED to go to JAE next weekend, and only have tomorrow, (Sunday) to sort this. I have all the parts I could possibly need, so please, any advice would be very greatly appreciated __________________ Nigel...........GTROC Member Now on '32GTR No.3

15th July 2006, 10:52 PM	#3 (permalink)
matty32 GTR Register Member Join Date: Dec 2005 Posts: 5,653	mine was a little like that coilpacks and plugs , re earthed it all too works a treat __________________ STAGEA (BLACK) RB25 MANUAL CONVERSION + AERO KIT + MUCH MORE INC COILOVERS £6.2K VISIT OUR WEBSITES!!!! www.neweraparts.com www.neweraimports.com www.neweramedia.com Japan Office Tel - Calls charged at UK National Rate): 0207-193-3979. Mobile ( Japan ): +81- (0) 90-4133-3825 Fax ( Japan ): +81-(0) 47-307-4678

16th July 2006, 12:33 AM	#5 (permalink)
NigelR32 GTR Register Member Join Date: Jul 2002 Location: RB26ville Posts: 916	Thanks for the info guys. The thing that puzzles me is the fact that it only does it after it's been booted?? __________________ Nigel...........GTROC Member Now on '32GTR No.3

16th July 2006, 10:14 AM	#6 (permalink)
NigelR32 GTR Register Member Join Date: Jul 2002 Location: RB26ville Posts: 916	I have NGK '8' plugs in the car, I'm gonna go and fit the 5's I have from my old car, just to see if that makes a difference. Is a tracking coil visible when removed?? I could just go out and replace everything, but i want to "find" the problem. Regards __________________ Nigel...........GTROC Member Now on '32GTR No.3

16th July 2006, 11:11 AM	#7 (permalink)
matty32 GTR Register Member Join Date: Dec 2005 Posts: 5,653	one of the coils on my 32 was split and visible, i would say that is your problem __________________ STAGEA (BLACK) RB25 MANUAL CONVERSION + AERO KIT + MUCH MORE INC COILOVERS £6.2K VISIT OUR WEBSITES!!!! www.neweraparts.com www.neweraimports.com www.neweramedia.com Japan Office Tel - Calls charged at UK National Rate): 0207-193-3979. Mobile ( Japan ): +81- (0) 90-4133-3825 Fax ( Japan ): +81-(0) 47-307-4678

15th July 2006, 09:28 PM	#2 (permalink)
GT-Rich GTR Register Member Join Date: May 2006 Location: Canada Posts: 30	Coil/Spark Plug? Those would be the first 2 things to check if missing..

15th July 2006, 11:25 PM	#4 (permalink)
inFOCUS GTR Register Member Join Date: Jul 2004 Location: Aylesbury Posts: 305	yep mine had a cracked coil pack which had the same symptoms.

16th July 2006, 11:52 AM	#8 (permalink)
tarmac terror New Users Join Date: Jul 2003 Location: Hampshire, but Scottish through and through! Posts: 2,637	Hi NigelR32, strangely, I'm having the same kind of problem mate. Its pretty intermittent but seems to rear its head more after a 'blast'. I'm taking mine to Abbey on thursday so they can work their magic on it. I know that you need it fixed ASAP but i'll let you know how I get on just in case your having a 'mare finding the problem. TT

16th July 2006, 12:27 PM	#9 (permalink)
NigelR32 GTR Register Member Join Date: Jul 2002 Location: RB26ville Posts: 916	Well, I thought I'd have a look this morning. I changed the Coil loom, and then went on the same journey as yesterday, driving at about the same speeds. I then did another quick blast on the Motorway, and fingers crossed, the problem seems to have gone away!! I think I'll give her another go this afternoon, just to confirm..........watch this space.......................... Regards and thanks for the tips guys. __________________ Nigel...........GTROC Member Now on '32GTR No.3

16th July 2006, 12:31 PM	#11 (permalink)
whoflungdung GTR Register Member Join Date: May 2005 Location: NW England Posts: 1,989	this problem is usually the ignition module breaking down as i had the same thing

16th July 2006, 12:48 PM	#13 (permalink)
matty32 GTR Register Member Join Date: Dec 2005 Posts: 5,653	yep he does swap over the coils and see if it makes a difference mine were nice and shiny but had a small split in one of them __________________ STAGEA (BLACK) RB25 MANUAL CONVERSION + AERO KIT + MUCH MORE INC COILOVERS £6.2K VISIT OUR WEBSITES!!!! www.neweraparts.com www.neweraimports.com www.neweramedia.com Japan Office Tel - Calls charged at UK National Rate): 0207-193-3979. Mobile ( Japan ): +81- (0) 90-4133-3825 Fax ( Japan ): +81-(0) 47-307-4678

16th July 2006, 01:07 PM	#14 (permalink)
Daz GTR Register Member Join Date: Aug 2001 Location: In the South Posts: 6,017	I've joined the league of mis-fires. Misses initially when first pulling away when cold ... but now also misses at any point in the rev range. Can drive through it ... but it splutters now and then.

16th July 2006, 01:47 PM	#15 (permalink)
NigelR32 GTR Register Member Join Date: Jul 2002 Location: RB26ville Posts: 916	I think the secret here is to get yourself some spare ignition components sat on the shelf. I can assure you, it makes life a lot easier when you can run through a process of elimination.....like just now, noticed oil under the transfer box, I just knew it was gonna be the rubber boot around the gearstick, and hey.............I had a new one in my spares box Regards __________________ Nigel...........GTROC Member Now on '32GTR No.3

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