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Thread: has this ever happened to u???

  1. #11
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    Run on

    The engine stopped when the solenoid de activated that"s why I"m thinking excess fuel.
    Spark ignition is a threatened species
    Biodiesel is the best emission control money cant buy
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  2. #12
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    For anyone reading this that doesn't understand.. A diesel's engine speed is controlled by the fuel. There is no actual "throttle". Basically, the engine draws in a full cylinder of air no matter the throttle position and the power it can make is controlled by how much fuel is injected into the cylinder upon charge compression..

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  3. #13
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    My guess is fuel plus the oil blowby gunk buildup was causing increased fuelling, as you mentioned it hasn't done 100kph for ages. It is odd that the fuel solenoid shut it down, but perhaps it was the fact the two combined gave enough to have the thing behaving eratically at highway speeds, and once the diesel was cut the thing slowed enough to no longer be "drawing" the gunk off the inlet walls??

    A good flush wouldn't hurt, both fuel system ala Fueldoctor etc, and a de gunking of the inlet, much fun there!
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  4. #14
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    May 2005
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    blowby, no doubt about it.

    hey everyone,
    Your symptoms are dead set straight down the line early onset blowby issues. experienced it myself many a time. re-ringing hte engine will fix your problem for a time, but for now there are a few things you can do to minimise the issues:

    1. check what mannor of vent system you have. early engines have 1 pipe from rocker cover to intake manifold. later ones have a hose from crankcase (on the front of the block) up to the manifold and a tee to the rocker cover. later revision helps to minimise hte blowby effects for a little while.

    2. install a catch can in the vent system. you can go rudementary (like a jar with an in and out) or fancy (pro-vent system). both will work.

    3. early diesels tend to get to a ring wear stage at which the engines run well but suffer increased oil consumption and blowby. ultimately, you're looking at a re-ring at best, or maybe a hone and some new pistons.

    dont be fooled by you apparrent control of the situation (being able to turn it off). in the coming months as the weather warms, the problem will get worse. driving fast also doesnt help (short gears are really the problem).

    start using a nice heavy oil (20W-60 or the like) and be buy a ring set

    a catch can will get you another 20-30,000km if your lucky

    oh btw - change you oil now, and check out just how runny it is. it'll be full of fuel as preeny suggested. likely the level on the dipstick doesnt drop too far between changes nowadays right?
    Last edited by gldgti; 20-09-2009 at 11:12 PM.
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  5. #15
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    Quote Originally Posted by cogdoc View Post
    My guess is fuel plus the oil blowby gunk buildup was causing increased fuelling, as you mentioned it hasn't done 100kph for ages. It is odd that the fuel solenoid shut it down, but perhaps it was the fact the two combined gave enough to have the thing behaving eratically at highway speeds, and once the diesel was cut the thing slowed enough to no longer be "drawing" the gunk off the inlet walls??

    A good flush wouldn't hurt, both fuel system ala Fueldoctor etc, and a de gunking of the inlet, much fun there!
    early diesels dont suffer from inlet gunking up, there's no EGR they get a nice oil slick, but its always liquid and comparatively clean - all the better for burning as fuel.
    '07 Touareg V6 TDI with air suspension
    '98 Mk3 Cabriolet 2.0 8V
    '99 A4 Quattro 1.8T

  6. #16
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    Definately blow by. Have seen this many times over the years.
    When I drove my US caddy ute down from Sydney and used 14.5 litres of oil on the way (!) I had a catch bottle setup to prevent tis exact problem.
    Oil rings are usually the culprit.
    Years ago I re-ringed a customers GLD under his orders not to rebore and go oversize pistons. It was hard to start and smokey so I took it out on a local highway to settle in the rings but it "deiselled" on its oil. Back to the workshop where I stuck a different brand of rings in it, still was the vsame so it eventually got a rebore and larger pistons. That car went like a dream afterwards and 15 years on it is still perfect. Go the catch tank/bottle for the moment I would suggest, while you think about stripping it.
    Andrew
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  7. #17
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    Quote Originally Posted by gldgti View Post
    ...
    2. install a catch can in the vent system. you can go rudementary (like a jar with an in and out) or fancy (pro-vent system). both will work.
    ...
    You've seen the one on my car. that's what we mean by rudementary.


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  8. #18
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    Aug 2009
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    an educational thread

    I learned something!
    Spark ignition is a threatened species
    Biodiesel is the best emission control money cant buy
    MK1 5 door Mexico Beige 5/79 Golf GLD 1.5

  9. #19
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    Quote Originally Posted by oracle1 View Post
    I learned something!
    you and me both
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    There are few things more satisfying in life than finding a solution to a problem and implementing it
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  10. #20
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    jesus friggin christ a lot of that went straight over my head, but i think basically u are all saying it is dot or on its way to being dot. i do understand the catch bottle stuff so i will try that for now. am i looking at bick bucks for the re ringing and all the other stuff??
    Last edited by gtimk5; 21-09-2009 at 05:34 PM.

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