Author Topic: I put the DIE in diesel /Run-a-way damage? (Read 4959 times)

RabbitJockey · « **Reply #15 on:** May 03, 2009, 05:44:02 pm »

Quote from: "Smokey Eddy"

I thought GP's were sensitive to run aways just because of the WOT conditions... putting down power, be it oil or diesel fed, will make a ton of heat.

When i had my run aways with my old head (cracks between valves) it wasn't blue like oil fed... it was a huge cloud of white. I suppose i should make a new thread about that? Was my run away oil fed? I thought it was having excessive water injection because my coolant would go down significantly and the cubic kilometer behind me would be a man, ahem jetta, made cloud of water vapour...

Regardless, this killed at least three of my glow plugs. And wouldn't start afterwards. Aswell, the 1 time i was dumb enough to over heat the engine that also killed the glow plugs.

mine had white smoke as well, and was definitely an oil run away. it was crazy amounts of white smoke too, the whole 4 lane highway i blew up on had to come to a near hault cause you couldn't see 10 feet because of all the smoke, it smelled terrible too. it went way up over the trees. one of the most amazing things i ever saw.

Rabbit TD · « **Reply #16 on:** May 03, 2009, 06:59:14 pm »

I would think that unless there were some metalic banging or breaking sounds during the runaway till it stopped running then everything should be fine hopefully. Simply do a compression test, if it wont turn over then you know right off the bat there is a mechanical problem and then pull the head.

td_Jetta · « **Reply #17 on:** May 03, 2009, 10:22:05 pm »

I haven't been able to get to the car this weekend. The car is an 85 Jetta. I don't remember any metallic banging sound when it went off but the heat was pretty intents. The amount of fuel is hard to say as I found the 1/2 litter bottle upside down with the 1/4 tubing still in it sitting tipped in the air box inlet. So the air box must have had a good 1/4+ of fuel spilled in it. I don't know how long after the bottle tipped with the hose in it before it ran away. There was an air filter in place so I don't think it got straight fuel. I thought the killer was the revs but I guess the heat is more of the issue. I could hear detonation sounds (pings) 15 seconds before I started to pullover. That's what scares me. I was on a long hill so I was close to full throttle on 3 cylinders when the pings came on.

Is it possible to have the cam belt jump a tooth and still not bend valves? when I turned it over it sounded a little strange like the valve timing was off. Could be the lack of glow plugs I guess or a blown head gasket or a hole in a Piston top or a bent valve. It used to start up so fast I don't remember how it sounds cracking over to compare it. My smoke was black from the tail pipe and a little white from under the hood. I think the white was oil cooking of the head and block from the heat. Well I find out soon enough. I'm glad to hear there is a chance it could be revived with out to much work and money.

jtanguay · « **Reply #18 on:** May 04, 2009, 06:46:18 am »

if you've used a high quality synthetic in the engine, there is a very good chance that its still 'alive'. if not, there is a good chance that the oil is all coked and sludged, especially if you have a turbo.

td_Jetta · « **Reply #19 on:** May 04, 2009, 07:30:37 am »

No synthetics......
I don't think I burned much engine oil. The white smoke was from external surfaces for just a moment. The dip stick check looked just fine. I guess the turbo bearings and head could be roasted. I didn't smell all that though.

Andrew, thanks for the good check procedure. I know about injector removals. I haven't posted much but I've read a lot of this forum. Hey I think my mechanical ego is slowly coming back.

Smokey Eddy · « **Reply #20 on:** May 04, 2009, 12:48:20 pm »

Quote from: "libbybapa"

but I imagine that it has to do with the fuel being present on the compression stroke and burning with extremely advanced timing.

Andrew

Smart thinking Andrew... I think you're exactly right.

Rabbit TD · « **Reply #21 on:** May 04, 2009, 07:04:30 pm »

Do a compression test, it will give you an indication of any internal problems if 1 or 2 are way different than another, didn't I hear you say you were running full throttle on 3 cyls. before or was that after the runnaway? If not it sounds like there were problems there to begin with and now is a good time to check it all out.

td_Jetta · « **Reply #22 on:** May 09, 2009, 01:53:37 pm »

Ok here's the scoop. The injector line broke because the rear pump mount bolt is MIA. So that is cleared up. I've got bent valves in the 1 and 4 holes. That's a guess. The lifters aren't stuck but I can hear squeaks from the guides so somethings not right. All the glows are melted away. The timing belt is mangled. I put a new TB on and new glows to try and start it. It runs very poorly on #2and3. Time to pull the head. I don't think a compression check will tell me anything more. Thanks for all the good input guys. -Temo :roll: