The Rover-Landers of BC

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PostPosted: Tue Aug 08, 2017 8:50 am 
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Bull Low

Joined: Wed May 29, 2013 2:24 pm
Posts: 200
Location: Ladysmith
Ok here is the story. Thought I blew a head gasket a couple months ago, truck was pushing steam quite a bit but never over heated - well at least on the gauge anyway. So whipped the head off and the gasket looked ok and the head surface wasn't bad. Got the head pressure tested and skimmed anyway just in case, the block surface looked fine but I never checked it for square. There was a bit of coolant in #4 exhaust port so I made sure the machine shop had a good look there, but they said it was all good. I put it all back together this weekend with a new e-ring gasket and it is still chuffing steam! Totally choked now! Now what? Talked with the machine shop and they were 99 percent sure there isn't an issue with the head, they do test it at room temp but at 45psi you would think it would have shown a crack if there was one. Block surface did look ok, and I've never heard of a 300tdi block twisting or cracking so I'm not sure what is going on here. I might do a leak down test before I rip in to it again but that would only isolate which cylinder not the block or head. anyone else have any other ideas to rule one or the other out?
Thanks,
Pat

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93 RRC LWB 300tdi, R380, 6" lift, 35's, lockers ...etc etc


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PostPosted: Wed Aug 09, 2017 8:07 am 
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Drag Link

Joined: Sat Aug 06, 2005 5:22 pm
Posts: 616
Location: Cumberland
going back to the beginning, can you definitely confirm steam and not white smoke.

was it all the time? hot or cold engine.. high or low rev...

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2005 LR3
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PostPosted: Wed Aug 09, 2017 9:22 am 
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Bull Low

Joined: Wed May 29, 2013 2:24 pm
Posts: 200
Location: Ladysmith
Yeah its steam, smells like antifreeze not diesel. Hot or cold, same. More noticeable when at a light and idling, can't see the steam when driving but I think that is because it blows away quickly.
Pat

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93 RRC LWB 300tdi, R380, 6" lift, 35's, lockers ...etc etc


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PostPosted: Wed Aug 09, 2017 10:40 am 
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Bull Low

Joined: Wed May 29, 2013 2:24 pm
Posts: 200
Location: Ladysmith
Think I'm going to pop the head off again and take a look. Might try to cobble up something to block the water passages of the block with the head off and supply some air to the block drain, worth a shot. If anything it would answer whether the block is cracked or not.

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PostPosted: Wed Aug 09, 2017 11:26 am 
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Specialist

Joined: Mon Mar 08, 2004 7:19 pm
Posts: 1445
Location: Calgary
You are smelling coolant at the exhaust outlet? If you are truly getting coolant into a combustion chamber, there are a couple of things you can do to check.

First leave the rad cap loose so there is no pressure. The coolant then can't get in and your steam should stop. In addition, you should be getting combustion gas into the coolant and it should bubble. It is usually pretty strange to get coolant into a cylinder when running as the cylinder pressures are very high compared to the coolant pressure.

Second, a cylinder will fill with coolant after being parked. You would hydrolock on starting one day.... Pull the glow plugs and see if coolant sprays out when the engine is turned. You can pressure the coolant with a tester when warm as well.


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PostPosted: Wed Aug 09, 2017 1:26 pm 
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Bull Low

Joined: Wed May 29, 2013 2:24 pm
Posts: 200
Location: Ladysmith
Thanks Red, I'll give that a go before pulling the head, again!
Pat

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93 RRC LWB 300tdi, R380, 6" lift, 35's, lockers ...etc etc


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PostPosted: Fri Aug 11, 2017 7:51 am 
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Bull Low

Joined: Wed May 29, 2013 2:24 pm
Posts: 200
Location: Ladysmith
So I put about 15psi into the coolant system and coolant was puking out the #4 exhaust port. Then I put a gauge on the #4 glow plug port then applied pressure again, nothing reading on the gauge but coolant still coming out the port. That leads me to belive the gasket and block are fine but the head is toast. Now to have a little chat with the shop that pressure tested the head in the first place!
Pat

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93 RRC LWB 300tdi, R380, 6" lift, 35's, lockers ...etc etc


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PostPosted: Fri Aug 11, 2017 8:23 am 
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Half Shaft
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Joined: Mon Mar 02, 2015 1:30 pm
Posts: 130
Before contacting them, I'd verify that the exhaust valve is closed and then do a retest. If it is still puking, then your head has problems. If not, it's likely a head gasket. No?

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PostPosted: Fri Aug 11, 2017 8:52 am 
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Bull Low

Joined: Wed May 29, 2013 2:24 pm
Posts: 200
Location: Ladysmith
No the head is done. The valves were closed with pressure supplied to the coolant system, so with the gauge in the glow plug port showing zero, the gasket, cylinder and the combustion chamber are fine I would think.
Pat

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PostPosted: Fri Aug 11, 2017 2:36 pm 
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Specialist

Joined: Mon Mar 08, 2004 7:19 pm
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Location: Calgary
Bummer. At least new heads are still being made.


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PostPosted: Mon Aug 14, 2017 7:38 am 
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Bull Low

Joined: Wed May 29, 2013 2:24 pm
Posts: 200
Location: Ladysmith
Yeah it happens, never good timing! Lucky enough Jeremy has one in stock so I'm not waiting for cross the pond shipping! Thanks for every ones help!
Pat

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93 RRC LWB 300tdi, R380, 6" lift, 35's, lockers ...etc etc


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PostPosted: Sun Aug 20, 2017 8:21 am 
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Crank Case

Joined: Fri Sep 14, 2012 7:12 am
Posts: 129
Location: Maple Bay
Pat,
Have not checked in recently so only just noticed this.
Did you have a word with the shop?
For those of us on the Island it would be useful to know which shop you used.
Eric.


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PostPosted: Mon Aug 21, 2017 7:42 am 
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Bull Low

Joined: Wed May 29, 2013 2:24 pm
Posts: 200
Location: Ladysmith
Well I've always used Thompsons if I can't machine things myself, and I've never ever had a problem with them. Fraser has always been awesome, unfortunately he was away on vacation when I dropped the head off, maybe that had something to do with it? Well shit happens! I was really happy with Jeremy over at Rocky Mountain sorting out a new head and various bits, truck is back and running great now!
Pat

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