Author Topic: 1.6 td flame thrower (Read 6089 times)

mtnman · « **on:** June 03, 2006, 08:43:25 am »

Who has seen this before??
I have just redone the cooling system on my 91 Jetta td new rad, belts, flanges etc. etc. To test it's efficiency last night I blasted up to Cheakamus pass, (pedal planted on the climb for about 15 minutes, lot's of exhaust smoke but OK coolant temps) . After going over the top I look in the mirror though and Holy!!!! I'm on fire just like Kimi's car at Monaco. Turns out not really flames but a LOT of sparks coming out the tailpipe. Tuned it off then restarted and it still runs fine . This engine runs and starts great and has good compression, but goes through a lot of oil, so I'm thinking this is raw engine oil inside the exhaust side of a very hot turbo charger. Any ideas as to this being the case any ideas of where my oil consumption is coming from?

Patrick · « **Reply #1 on:** June 03, 2006, 03:57:06 pm »

Last time I saw sparks out the exhaust of anything, it cost me a pile of money. Big cam Cummins in a Kenworth. Turned out that when I had an air filter box replaced at a dealership (Toronto KW) they left the clamp loose and it was sucking dirty air. Wound up doing an inframe about three weeks later. I'd be checking everything from the air filter to the turbo to make D***ED sure it's not sucking any dirty air!

addautomotive · « **Reply #2 on:** June 03, 2006, 04:30:44 pm »

Someoen posted a year or so ago with pretty much just what you described. Apparently he had lots of soot in his exhaust system, and it lit up on a long hard drive. Pretty much like a "chimney" fire.

mainer · « **Reply #3 on:** June 03, 2006, 06:02:26 pm »

Thats what I was thinking, It has lived its life blowing all un burnt fuel out the pipe and some of has sure stuck on the inside. But it has never got hot enough to light the fuel on fire. With the pedel planted for 15min your egt's went to the moon and lighted that fuel on fire.

Coop
_________________
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sethyboy85 · « **Reply #4 on:** June 03, 2006, 07:28:43 pm »

I have seen that happen even on gasser's, if 02 sensor was shot long enough and ran waaaay rich then flogged for some time.

LeeG · « **Reply #5 on:** June 03, 2006, 11:29:32 pm »

yeah, I've had similar experience with my high mileage oil sucking TD, and not too far from yours either. Giving it a real thrashing going to work early on the seatosky and suddenly there was light in the mirror RIGHT behind me....after a few seconds confusion figuring out that no-one coulda caught me that quick at the speed I was going, the thought that something expensive was happening occured. Got it back down to landing speed and started looking for a wide spot to pull off. Then a car goes by the other way and in his lights I can see how much smoke I left through the last set of corners :shock: I did stop but didnt find anything amiss.

recently started a new job / commute that includes about a 1000 vertical foot climb that the car will do in 4th, WOT holding 100KMh....probably 4 or 5 minutes with it nailed. About once a week nearing the top, the light haze I normally leave behind will be replaced by a huge cloud of thick brownish black smoke. Thick enough to make people change lanes behind me :oops: I suspect it is as desribed above, oily gunk builds in exhaust and vaporises when conditions are right.

mtnman · « **Reply #6 on:** June 05, 2006, 08:08:46 am »

Hey what colour is your car? Mine is black, we should make sure we never get behind each other. My car runs fantastic but uses a lot of oil. I was sort of hoping that someone would confirm if leaking turbo seals would let enough oil into the turbo exhaust side to do this. I believe a turbo rebuild would be the easiest of all cures for oil consumption. Chimney fire sounds plausible :lol:

LeeG · « **Reply #7 on:** June 05, 2006, 08:52:16 am »

hi mntman,
My car is that dark blue, almost black color. Worked in Squamish for 6 years, the last 2.5 I commuted daily from near White Rock. New Job is up at SFU, so I wont be smokin up the seatosky much now.

How much is a lot of oil? I'm up to at least 2l/1000 km. I dont think that the turbo seals account for it all....blowby. pull your breather hose and go for a drive when the motors hot. Lotsa smoke coming out from under the hood? Mine does. At 410,000 km, I bet its 70% blow by and the rest divided between valve seals and turbo. despite that, these engines seem to be pretty bullet proof, I'm not gentle with it!
There is a motor hanging in my garage waiting for time to swap it. One of Jake's turbo rebuild kits is going on it. Out of curiosity I'll do a compression test on the old one before I pull it .

mtnman · « **Reply #8 on:** June 07, 2006, 07:55:10 am »

I don't really keep track but I bet the car uses 2-3l/1000k. Excellent compression as measured by Ralphs when I bought the motor from them. Starts great and has no run away problem so I figure there's not mch cylinder wall leakage. Problem definitely doesn't warrant a rebuild at this time.
BTW LeeG where did you work in Squamish?

jtanguay · « **Reply #9 on:** June 07, 2006, 10:11:09 am »

one thing is for sure. drive these cars hard and they will burn oil. even a new engine will burn a little if driven hard enough

unless its synthetic...

LeeG · « **Reply #10 on:** June 08, 2006, 12:33:21 am »

I worked for SD48, now SFU

I think mine burns more in stop and go than on the highway, based on the last month. After idling for a few minutes its pretty gruesome for the person behind me when I take off.

Author Topic: 1.6 td flame thrower (Read 6089 times)

addautomotive