Corvair DiagramCorvair Photo
Corvair Center
home forum corvairs calendar links Corvair Podcast
California Corvairs
Clarks Corvair
Clarks Corvair
“CORSA"



Chevy Corvair License Plate
Chevy Corvair Chrome Wheel
Corvair Center Forum :  Corvair Center Phorum The fastest message board... ever.
Corvair Center 
Help reading spark plug
Posted by: Gwrodzhi ()
Date: February 27, 2018 09:26AM

I have a 1964 Spyder that I have been working on getting back on the road. Just had the turbo rebuilt and took it for a ride and I think I am definetely running rich. Covered about 50 miles with 10 minutes of idling. I just installed a fuel pressure regulator but have not put a new set of plugs in and taken it for a ride yet. I am wondering if anyone is able to tell if I am possibly burning oil or running rich or both. The number 4 plug is always the worst but compression is even across all cylinders. I have not done a leak down test yet though. Car does not smoke through the exhaust, my valve cover gasket is leaking pretty badly though and can be part of the oil consumption. Attached is a photo of the plug let me know what you think. Thank you.

Attachments:
Options: ReplyQuote
Re: Help reading spark plug
Posted by: steve c goodman ()
Date: February 27, 2018 09:34AM

Give plug make and number please. Also some insight to ign system quality as far as wires/coil/points and cond and timing number. What is fuel pressure now?

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC

Options: ReplyQuote
Re: Help reading spark plug
Posted by: Gwrodzhi ()
Date: February 27, 2018 10:24AM

Ngk br6hs plug, cap rotor and wires all new in last 1000 miles. Petronix 1 ignition. I do have to increase timing I believe I am running 18 degrees as I was previously having detonation issuers which now seem to resolved. I have not run the car yet with the regulator installed. But I believe it is set to 2.5 or 2.7lbs

Options: ReplyQuote
Re: Help reading spark plug
Posted by: MattNall ()
Date: February 27, 2018 10:27AM

6 is a hot plug... plug is sooty but dry.... fuel pressure too high..





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Options: ReplyQuote
Re: Help reading spark plug
Posted by: Bob Helt ()
Date: March 02, 2018 03:23PM

My thought is that your YH accel punp diaphragm is hardened and not functioning.
Bob Helt

Options: ReplyQuote
Re: Help reading spark plug
Posted by: Gwrodzhi ()
Date: March 02, 2018 05:11PM

I hope it’s not that. The carb was rebuilt about a year ago or so. I installed the fuel pressure regulator and I am going to take it for a ride with new plugs and see what happens. Hopefully they come back clean.

Options: ReplyQuote
Re: Help reading spark plug
Posted by: joelsplace ()
Date: March 02, 2018 05:20PM

A 6 is what NGK recommends. 5 for a non turbo. It does sound hot though.

Options: ReplyQuote
Re: Help reading spark plug
Posted by: j3m ()
Date: March 03, 2018 01:42PM

Hey yall, specifically concerning NGK SPARK PLUGS,
*****The HIGHER THE NUMBER Equals THE COLDER THE NGK PLUG's HEAT RANGE!!!!****

[www.cyclepedia.com]

Options: ReplyQuote
Re: Help reading spark plug
Posted by: joelsplace ()
Date: March 04, 2018 09:25PM

That is correct but air cooled NA street bikes generally use 7s and that is with extended tips that are supposed to not get as hot so 6 sounds hot to me for a turbo.

Options: ReplyQuote
Re: Help reading spark plug
Posted by: jjohnsonjo ()
Date: March 05, 2018 04:39AM

I have been running 6's in my turbo for many years, that's the right plug.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic

Options: ReplyQuote
Re: Help reading spark plug
Posted by: Gwrodzhi ()
Date: March 08, 2018 08:59AM

Added regulator just short of 2.5lbs . This is the plug after 10 miles and 15-20 minutes of idling. It was a new plug, what are your thoughts.

Attachments:
Options: ReplyQuote
Re: Help reading spark plug
Posted by: MattNall ()
Date: March 08, 2018 09:06AM

Looks good so far!! Drive it!





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Options: ReplyQuote
Re: Help reading spark plug
Posted by: Gwrodzhi ()
Date: March 08, 2018 09:33AM

Ok. Wasn't sure if it was too black. Thanks

Options: ReplyQuote
Re: Help reading spark plug
Posted by: MattNall ()
Date: March 08, 2018 10:19AM

Idling does that...





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Options: ReplyQuote
Re: Help reading spark plug
Posted by: goatsnvairs ()
Date: March 08, 2018 11:31AM

Looks wet, like....oily wet....

Options: ReplyQuote
Re: Help reading spark plug
Posted by: jjohnsonjo ()
Date: March 08, 2018 12:29PM

X2, drive it report back

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic

Options: ReplyQuote


Sorry, only registered users may post in this forum.
This forum powered by Phorum.