ChickN

for the past couple of months my coolant has been looking a little milky.....about six months ago i did a system flush and i now see that it is milky again. i know this is a symptom of a leaky head gasket....but is there any other possibilities????? i would rather swap in a 22re than just rebuild the 20r. any help would be much appreciated!!!!!

atistang

what do your spark plugs look like?

if there is a cylinder leaking then that plug will probably be white

ChickN

the guy that i bought it from said he had a problem with the farthest back spark plug fouling out....i bought the truck a year ago and changed the plugs and switched to a webber and have never had that problem! a nd come to think of it that fouled plug was white.

Adam F

Whats the condition of the timing chain?

Its possible for the timing chain to become loose and wear a hole in the timing cover and cause oil and coolant to mix.

First thing you should do is a compression test.

atistang

maybe you should check that plug again, white can be a lean mixture as well
if his timing chain is loose then it will have that ticking / rattling sound right?

ChickN

will do.....its been a while. ill give you guys an update tomorrow!!!

22repower

iTrader: (1)

Probably not the timing chain, the early 22r/20r ones did not have problems like ones after 1984 or 85

ChickN

my best guess is just a leaky gasket....somthin real small! because there is more oil psi than psi from the cooling system (especially cause my truck never gets up to opp temp) it is very possible that there is just a little oil in the coolant! but thats just a guess!

GorgeRunner

My Runner has a small head gasket leak. I lose a little coolant over a period of time, no water in the oil or oil in the water. Aside from the coolant loss, the most noticeable symptom is excessive steam coming out the exhaust pipe, especially when the engine is cold.

atistang

i was thinking, also if you engine has an intake manifold that coolant runs through it could be the intake manifold gasket as well