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  Soarer Central * Mechanical - V8 * Strange Idling Problem when stopped Previous Previous    Next Next  

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Mitchell Nunn
Newbie
NSW
V8

Posts: 4
Reg: 01-2012

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Thursday, April 26, 2012 - 03:37 pm, by:  Mitchell Nunn (Shengo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hello all I have had my V8 Soarer for about 5 months and decided a few weeks ago to degrease the motor. Quite a bad mistake upon reflection as it has caused a quite a headache.

Problem was some water go into the back two spark plugs, my mechanic friend cleaned them and put them back in. Then my friend told me that car was using the wrong spark plugs.

Upgraded them to NGK platinum which aren't cheap, had him check the leads for water which looked fine to him and the car ran fine for a while with the NGK platinums and now there is a small miss when your stopped at the lights.

The miss affects the car when it takes off, like its hesitating but once it gets going it drives as it should. Weather permitting I'll try to reset the ecu tonight to see if it solves the problem. My thought was that the ECU was reset on the old spark plugs (NGK Iridium) so that's maybe why it idles funny.

So please any help from the Soarer guru's out there or somebody else that has encountered this problem will be greatly appreciated as it has got me quite upset that my beloved Soarer has run into this problem. If you can give me some advice I can get my friend to re-examine this annoyance of a problem.

Thank you
Damian Ware
Goo Roo
Victoria
UZZ32

Posts: 2119
Reg: 10-2005

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Thursday, April 26, 2012 - 03:54 pm, by:  Damian Ware (Frozenpod) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Miss sounds like it might have a broken lead or wrong plug heat range or gap.

Which exact plug did you put in your car.

I would check each lead with a multimeter.

PS Iridium plus are fantastic (the best plufs available) provided they are the correct heat range and gap you cannot go wrong.
Vincent Chan
TryHard
nsw
v8

Posts: 233
Reg: 12-2010

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Thursday, April 26, 2012 - 04:00 pm, by:  Vincent Chan (Vincent191) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Iridium plugs are more expensive than platinum, Iridium gives a better spark and work well even with a leaner fuel mixture. So maybe by resetting your ECU to compensate for the different spark plug charateristics will solve your problem. It won't hurt.
Stephen Shackleton
Tinkerer
WA
UZZ32 #166

Posts: 99
Reg: 01-2008

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Thursday, April 26, 2012 - 04:01 pm, by:  Stephen Shackleton (Shack) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I washed my engine not long after I bought it, a week later and $400.00 I had it running again. Plugs, leads, dizzy cap and a rotor. Try a ECU reset and then test the leads if it still misses.
Mitchell Nunn
Newbie
NSW
V8

Posts: 5
Reg: 01-2012

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Thursday, April 26, 2012 - 06:07 pm, by:  Mitchell Nunn (Shengo) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Thanks everyone for the advice. Damian it says on the box that they are NGK laser platinum, says 2215 on the top.

Iridiums were fine until the degreasing incident and honestly I really don't notice the difference between either spark plugs when driving.

I will try the ECU reset and hopefully it will solve the problem.
Damian Ware
Goo Roo
Victoria
UZZ32

Posts: 2120
Reg: 10-2005

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Friday, April 27, 2012 - 08:23 am, by:  Damian Ware (Frozenpod) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

A quick google search shows that the NGK 2215 is the following BKR6EP-8.

This is the correct heat range for the 1uz but the wrong gap.

The factory specs are the -11 plug which is the larger gap, running the smaller gap (-8) as you are will effect idle.

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