SDevol8

What's up guys I bought a engine from craigslist and when I took the intake manifold off there was a nasty black tar substance building up in the head. Is it possibly just oil that leaked from bad valve seals. Guy said it had a bad head gasket but still ran and he drove it for 2 months with the


bad gasket
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SDevol8

Any ideas

hutch959

iTrader: (18)

slowly leaking injectors maybe

maybe when you turn it off... they oozzz fuel and it kinda bakes it on the top of the head.

MinusPrevious

iTrader: (3)

Well, if the owner was running full time E85, it could be the black gunk we all have reported from not running periodic runs of 91

LetsGetThisDone

iTrader: (1)

Some* have reported...

That looks like coolant/oil goop was going through the PCV and into the manifold.

xRoguex

iTrader: (15)

EGR/PCV mixture combined with air/water and a bit of fuel.

It will all come out if you hot tank it.

hutch959

iTrader: (18)

now wait a minute... he didnt say anything about black stuff being in the intake manifold.

OP... is the inside of your intake and intake runners all gooped up black goo also??

kikiturbo

if it comes from the PCV then he will see black trails coming from the small holes in the intake manifold..

mrfred

iTrader: (50)

I agree that it could be E85 gunk.