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    VWVortex


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    Type: Posts; User: Fat Rabbit

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    1. Replies
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      Be sure to observe the injectors under pressure -...

      Be sure to observe the injectors under pressure - not spraying just seeing how they hold fuel system pressure (like after you turn off the car). Jumper the fuel pump to run the pumps to pressurize...
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      693

      Lots of places for Vacuum leaks. Even the...

      Lots of places for Vacuum leaks. Even the injector "O" rings can cause leaks. You will install new "O" rings with the injectors -- right??? other common places are the cylinder head cover, the...
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      693

      What year is the car? There are several editions...

      What year is the car? There are several editions of CIS. Frankly, my money would be on a leaky injector or two that causes the fuel pressure to bleed off. Without pressure on the fuel line gas in...
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      It could possibly be the cylinder head gasket...

      It could possibly be the cylinder head gasket which would be an expensive repair. If you have other cylinder head gasket issues like low compression in a cylinder or two or white exhaust smoke those...
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      That's typical. The inside mark on the cam gear...

      That's typical. The inside mark on the cam gear (dot or line) lines up with the top edge of the cylinder head. I don't see the mark on the inside of the gear in your picture. (Did you make the...
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      The ground for the ECU is the most important...

      The ground for the ECU is the most important ground as you may have just found out. Other grounds may cause something not to work but that ground will fry the ECU. There is usually a ground from...
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      Bad grounds will kill the ECU. The ground that...

      Bad grounds will kill the ECU. The ground that is most important comes from the ECU and usually attaches to the engine at the coolant hose flange -- transmission end of the engine. Assure the...
    8. Sometimes oil will leak across a bad head gasket...

      Sometimes oil will leak across a bad head gasket from oil journal to cylinder. As you mention, your compression test is good. Your assessment of a crack in plug hole wall seems logical to me. ...
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      A new coolant temp sensor is less than $20. ...

      A new coolant temp sensor is less than $20. Since the car seems to run better without it plugged in a new one might be in order. It also furnishes the ECU information about pulse duration -- ie...
    10. The crank needs to be at TDC as witnessed by the...

      The crank needs to be at TDC as witnessed by the TDC mark on the flywheel. Completely remove the plastic cover on the transmission viewing hole -- it simply screws out of the transmission housing. ...
    11. Replies
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      If you have a big current drain somewhere there...

      If you have a big current drain somewhere there will not be enough power to run the starter solenoid. It will click but not activate. You are putting a big drain on the system when the voltage...
    12. Yup, sometimes old injectors dribble fuel. I'd...

      Yup, sometimes old injectors dribble fuel. I'd probably check the Cold Start injector first to make sure that is not dumping fuel. The CS injector is electrically operated -- open or closed. ...
    13. Replies
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      Do as the post above says. Unplug the "new" O2...

      Do as the post above says. Unplug the "new" O2 sensor and see what happens. A lot of stuff today comes bad out of the box or fails shortly. The same goes for the replaced in tank fuel pump --...
    14. Replies
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      852

      For sure check for vacuum leaks. Probably look...

      For sure check for vacuum leaks. Probably look at fuel supply too. (Got gas??) Your '85 GTI likely has two fuel pumps. When an in-tank pump goes bad it can suffer for a while -- maybe pump a little...
    15. Replies
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      462

      Since the part you got from Techtonics Tuning was...

      Since the part you got from Techtonics Tuning was "too big" I'll bet that the part you need is VW PN N0101371 which is listed as M12X1.5X35. (The other size is apparently M14X1.5X40.) If I were...
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      '84 was a "split year" so you need to order the...

      '84 was a "split year" so you need to order the bolt by VIN. FR
    17. Tough to say without seeing your issue. There is...

      Tough to say without seeing your issue. There is an inexpensive tool ($10-15) to pull the injectors. But they can be an issue even with the tool. If I have one that is stuck I usually soak around...
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      Check under the air filter and check the air...

      Check under the air filter and check the air intake tube into the airbox. I once had some mice that would build nests in the air intake tube and partially or totally block it over night while the...
    19. Replies
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      Since the introduction of ethanol, most of the...

      Since the introduction of ethanol, most of the issues I have seen with cars that have sat for a year or two without running have been with fuel pumps. FR
    20. Replies
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      The '86 should already have a knock sensor...

      The '86 should already have a knock sensor although the PN (and connectors) may be different for the two systems. Watch the torque values for the knock sensor. Too tight will ruin it.

      BTW -- I...
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