Too Lean - White-Ish Plugs

[1989 Eliminator]

 

So i tested/checked the TPS, CTS, o2 and map sensors.

 

All my grounds are upgraded and clean.

 

Could this be a knock sensor issue? If its bad it wouldnt retard the spark like its supposed too.

 

Possibly not enough back pressure and thats messing with egr?

 

I'm stuck!

[cruiser54]

Not the knock sensor.

Not back pressure.

What spark plugs are those BTW?

[88whitemanche]

Those look like those e3 spark plugs

[1989 Eliminator]

I bought them awhile ago. They are E3 spark plugs.

 

http://www.e3sparkplugs.com/redirect.php?p=%2F

 

If these are wrong then would this affect idle?

[cruiser54]

Those look like those e3 spark plugs

That's what I was thinking. Ditch those pieces of crap right away and put some NGK 7252s in there.

[1989 Eliminator]

I thought id try them! And i guess thats why my manifold gasket is going bad again. Everything is running too hot

[cruiser54]

I don't think the plugs are causing your manifold gasket to fail, but those plugs look like they're definitely the wrong heat range.

[1989 Eliminator]

Well if the gases get too hot then it would distort the gasket material in the gasket causing a leak? Thats my thinking. Because I'm having a low and sometimes rough idle. And sometimes i can hear a leak (ticking)

[cruiser54]

Nah. It's the plug itself that is too hot of a heat range. It retains it's heat and that's why the deposits are on it. 

[benjy_26]

After much trial and error, I keep coming back to either the NGK's mentioned above, or the Champ RCY12's.