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1987 4runner strange occurrances...

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Old 03-01-2016, 01:30 PM
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1987 4runner strange occurrances...

Bought this truck 500 miles ago. Have had a couple weird overheats (didn't let them get serious by any means) and she uses coolant. I drove to work this morning just fine, but continuously died coming home and puttering out needing to be restarted. Got home to notice leaking oil from around the oil dipstick valve??? She's been using coolant heavily and I got the head gasket checked and there's no exhaust in the coolant, no white smoke, but when I replaced the thermostat the coolant was a white blue NOT GREEN. I just did some new interior side panels last night and hooked up a couple speakers, could this be the cause of my problems?? Electrical BS? Why would that spur a strange leak??
Old 03-01-2016, 02:39 PM
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22re i assume

Could be the headgasket still. Coolant color is not necessarily important as i think toyota uses red now, honda uses blue i think. But they are still 50/50 mixes.

Rent a pressure tester from advance and pressure test the cooling system that can pin point a leak that is external and possibly one that is internal if you remove the spark plugs and look for coolant in the cylinders.

A leakdown tester can also be used. Which will show bubbles in the coolant if there is a gasket leak or a cracked passage in the head.

There is also a coolant passage in the intake manifold gasket that can leak and burn coolant but not allow gasses back into the system.

The oil dipstick tube is simply stuck into the block and can leak. Just unbolt it, pull it out, add some sealant to it and put it back.

It may be a good time to pop the valve cover and check for timing chain guide being broken, which can eat a hole in the cover allowing coolant in the oil and oil in the coolant.

You got some searching to do

Last edited by 92ehatch; 03-01-2016 at 02:43 PM.
Old 03-02-2016, 05:40 PM
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Turns out it's the timing chain guide. So what's my next step?
I also stuck a couple pictures of my side panels, redneck and plywood.
Anyone have an engine for sale??












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