86z(Shadow)

My old 86 300zx I sold my buddy (the silver one in my profile picture)is have some problems when the cr gets warmed up it starts shooting vapor aintifreeze out from under his intake manifold on the passenger side I think it may be the gasket but I'm not to sure. Has anyone else had this problem an are there any easy ways to getting under the intake or easier ways to take it off other than the way the Haynes book tells you

zxguy1986

Sounds like gasket. Gotta locate the source. I would fill it up, drive to a lift, cool it down. Put on lift, raise it up, turn it on, watch for the leak.

86z(Shadow)

I don't think it'll make it that far it made it about 10 minutes up the road an got so bad u couldn't drive anymore but ima go try the gasket hopes it works lol thank ya from trying to help though

zxguy1986

OK, didn't know it can't be driven. I was looking for a fast way to get under it with good lighting. You can do it at home. Get a good hydraulic rolling floor jack and some serious blocks all around. One corner at a time. All you need to do is get it up high enough and steady enough on solid blocks to slide under it with a light. Don't slide under if it's on milk crates and stacked 2x4s. If you start it cold, filled, cap on, you should see where the leak begins as it gets up to temp. A filled cooling system should leak liquid before any steam shows up.

I would want to do that before I started any gasket labor. Anyway, if it's your coolant, leaking out is way better than leaking in...

86tcoupe

There is a radiator pressure tester ,a pump that pressurizes the system to find a leak .
I recommend you go to someplace like Wendys order a $6 meal combo around 11am then take it to a garage / shop mechanic you trust and ask the guy to test it for you for the meal . use to work on me .

ken99

I wouldn't run the engine at all. Check the oil. If it has a milky appearance, then coolant has contaminated the crankcase. Running the engine is scoring the bearings and cylinder walls. Even if the oil appears clean, running the engine without coolant circulating through the head will super-heat it, cracking the casting. I see a rebuild in your future.

86z(Shadow)

Got it fixed was a cracked hose that runs into the intake manifold from underneath got that then of course every other hose ripped lol toke me 3 days to get everything put back

86z(Shadow)

Also one question both the valve cover breather tubs broke an we couldn't find them at any parts store could we just put filters on them instead of vacuum tubes right now we have some rigged up tubes so he can get to work it works but looks nasty

rogerz

if the tubes you are talking about are the ones that are 3/4 inch on the valve cover and reduce to 1/2 inch get a copper 1/2 by 3/4 plumbing pipe ell and some rubber tube of the correct dimension. looks a little hokey but it works. paint the copper fitting with a rattle can and it almost looks like it was made for it. and you might check the dealer i was able to get it for my 86T. Left side be real expensive so just get two rights. all you really need is the reducing elbow rubber. then extend the 1/2 hose as long as you need to make connection.