About spark plugs.. - ZR-1 Net Registry Forums

gasp1200 · 06-13-2015

Why my 1990 ZR1 eating spark plugs..??

Racinfan83 · 06-13-2015

Define "eating?...

Dynomite · 06-13-2015

Quote:

Originally Posted by gasp1200

Why my 1990 ZR1 eating spark plugs..??

Welcome to the Forum

A photo of an eaten spark plug would be informative

Also.....what Brand/Number are the Spark Plugs that are being eaten?

gasp1200 · 06-14-2015

I mean it feels like that car eating spark plugs..i have tested acdelco 41-602 and those works only few weeks then i tested acdelco platinum 41-913 and same thing. NGK BKR6E works about few months but then the car starts again misfire and hesitate. So that kind of problem i have with this Z..

And i'm sorry about my bad english..i'll try to do my best

Dynomite · 06-15-2015

I would suggest that your fuel ratio (rich or lean) may be causing plug issues......and a photo of a plug would be of interest.

It would also be of interest how long this has been going on and if you changed some other component (added a new chip or using different gas for example) when this issue with plugs began.

Did your ZR-1 "not eat plugs" at some point

I am not a plug person and am not familiar with those plugs as I use NGK Iridium BKR5EIX

You English is fine

mike100 · 06-15-2015

Is this occurring in all cylinders?

XfireZ51 · 06-15-2015

What are u gapping them at?

ZRapid-1 · 06-16-2015

This website has very good pictures of various spark plug conditions.
http://www.autolite.com/media/11838/plugtips.pdf

Post which one of the examples most closely match your sparkplugs. Then we can zero in on the root cause.

I hope that the "eating" is not detonation.

Also, 91 octane (US) fuel is required.
Note that octane measurements are different between the US and Europe.

Research Octane Number = RON
Motor Octane Number = MON

The European octane rating is RON, whereas the US octane rating is an average of (RON+MON)/2.

So, US octane of 91 ((RON+MON)/2) equals EU octane of 95 (Research Octane Number = RON).

Kippis!

06-13-2015	#1
gasp1200 Join Date: Jan 2014 Location: Finland Posts: 2	About spark plugs.. Why my 1990 ZR1 eating spark plugs..??

06-13-2015	#2
Racinfan83 Join Date: Apr 2013 Location: Eastern Missouri Posts: 773	Re: About spark plugs.. Define "eating?... __________________ [LEFT][SIGPIC][/SIGPIC][/LEFT] [CENTER][COLOR=Indigo][SIZE=4][I][B] Now Sold 1990 ZR-1 #2093, Black on Black..[/B][/I][/SIZE][/COLOR][/CENTER]

06-14-2015	#4
gasp1200 Join Date: Jan 2014 Location: Finland Posts: 2	Re: About spark plugs.. I mean it feels like that car eating spark plugs..i have tested acdelco 41-602 and those works only few weeks then i tested acdelco platinum 41-913 and same thing. NGK BKR6E works about few months but then the car starts again misfire and hesitate. So that kind of problem i have with this Z.. And i'm sorry about my bad english..i'll try to do my best

06-15-2015	#5
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,797	Re: About spark plugs.. I would suggest that your fuel ratio (rich or lean) may be causing plug issues......and a photo of a plug would be of interest. It would also be of interest how long this has been going on and if you changed some other component (added a new chip or using different gas for example) when this issue with plugs began. Did your ZR-1 "not eat plugs" at some point I am not a plug person and am not familiar with those plugs as I use NGK Iridium BKR5EIX You English is fine __________________ Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 06-15-2015 at 02:24 AM.

06-15-2015	#6
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: About spark plugs.. Is this occurring in all cylinders?

06-15-2015	#7
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: About spark plugs.. What are u gapping them at? __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

06-16-2015	#8
ZRapid-1 Join Date: Sep 2010 Location: Bethany, CT Posts: 119	Re: About spark plugs.. This website has very good pictures of various spark plug conditions. http://www.autolite.com/media/11838/plugtips.pdf Post which one of the examples most closely match your sparkplugs. Then we can zero in on the root cause. I hope that the "eating" is not detonation. Also, 91 octane (US) fuel is required. Note that octane measurements are different between the US and Europe. Research Octane Number = RON Motor Octane Number = MON The European octane rating is RON, whereas the US octane rating is an average of (RON+MON)/2. So, US octane of 91 ((RON+MON)/2) equals EU octane of 95 (Research Octane Number = RON). Kippis!