1993 Chevy Van losing coolant

1993 CHEVROLET VAN
163,000 MILES • V8 • 2WD • AUTOMATIC
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HARRY HEANEY
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193 chev van 6.2 diesel 16months ago the engine was totally rebuilt by a competent localmechanic. in about 4 days of running the coolant overflow blows out about a pint of coolant . the engine does not over heat and runs good. my mechanic chemically checked for cracked heads or head gasket problems.no co2 in coolant. also checked for air leaks and found none. after running van i can hear gurgling in over flowtank and can see bubbles. we can't find problem. can you please help
Apr 4, 2008 at 6:29 AM
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2CARPRO JACK
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Does it blow the coolant out or is it just about that much low? A chemical test of the cooling system isnt a 100% guarantee that there isnt an internal leak somewhere, especially if it doesnt overheat or leak on the ground. Does it ever run rough in the morning?
Apr 4, 2008 at 9:44 AM
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HARRY HEANEY
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[quote:05617f3038="2CarPro Jack"]Does it blow the coolant out or is it just about that much low? A chemical test of the cooling system isnt a 100% guarantee that there isnt an internal leak somewhere, especially if it doesnt overheat or leak on the ground. Does it ever run roug h in the morning?[/quote:05617f3038]it blows outthe overflow tube onto the garage floor i recently had to replace the glow plugs( wouldnt start) and it is getting hard to start again. it runs fine after it starts
Apr 4, 2008 at 5:57 PM
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2CARPRO JACK
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Might want to try the glow plug relay. Does it have the correct rating on the rad cap? if too light (13lbs) may be blowing past it, might want to try a 16 lb 'r
Apr 5, 2008 at 8:00 AM