Date: Fri, 24 Apr 1998 22:03:15 -0400
Reply-To: Patrick Dooley <pdooley@GTE.NET>
Sender: Vanagon Mailing List <Vanagon@vanagon.com>
From: Patrick Dooley <pdooley@GTE.NET>
Subject: Re: CIS Experts: engine does not start (long)
Content-Type: text/plain; charset="iso-8859-1"
Helmut, you have to get a CIS pressure gauge. You are driving blind without
one. The CIS injectors open at ~30 psi. Without a gauge you don't know if
your'e getting that much. The fuel pump is most likely the problem, even if
you can hear it, even if it make tons of volume, if no pressure, then no
flow. Get a gauge and check your pressures. All tests outlined nicely in
Haynes and Bently.
-----Original Message-----
From: Helmut Zeidler <Helmut_Zeidler@NOTESMAIL.NOKIA.COM>
To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM>
Date: Friday, April 24, 1998 6:09 AM
Subject: CIS Experts: engine does not start (long)
>To tell you the whole story to be discussed over the weekend:
>
>I had to do a piston ring swap on the 5 cylinder because
>there was too much blue smoke during deacceleration. The
>sealing of the ventshafts were already changed, it helps
>on this problem, but it didn't solve it completely.
>
>I removed the engine's head including attached intake and
>exhaust manifold, it was the easiest way. Therefore I had to
>unplug the injectors which should have been verified later on.
>
>It needed some time to get all the exchange parts and put it
>back altogether. I checked the crank- and camshaft timing,
>adjusted the distributor timing. In all, the van sat down
>for more than three weeks.
>
>As I wrote, I wanted to check the spray pattern of the
>injectors. I forced the fuel pump to run and opened the
>fuel pressure regulator by raising the air pressure plate
>by hand. But there was no fuel coming out of the injectors.
>
>The coldstart injector sprays fuel into the intake manifold.
>This part works fine, electrical connection to it is OK.
>
>I opened one line to the injectors at the fuel distributor
>and fuel spilled out. It tells me, that at least some fuel
>pressure is on that line.
>
>Weeks ago I translated some German user manual about pressure
>test equipment to English. I would come back to this to test
>my lines, if the owner wouldn't that far away.
>
>Anyway, does one have some experiences, which device can
>reduce the fuel pressure at a CIS on a faulty condition?
>
>Fuelpump: The sound is as usual. But the intake hose is a
>bit small. Fuel tank comes from a Diesel or carburated Vanagon.
>But before last month there was not problems at all.
>
>Fuel Pressure Regulator: This is the old rusty thing out
>of the AUDI. I painted it outside, but I do not know what
>happened inside.
>
>Fuel Filter: This is taken from the AUDI, too, but it is
>looking very nice and clean. I guess, it was changed a few
>month before I bought that vehicle.
>
>Fuel Pressure Regulator: The mechanic of the air pressure
>plate and cylinders moves like they should do.
>
>Warm Up Fuel Pressure Regulator: No idea how to check it
>without measurement equipment. Electrical connections are
>checked and they are all fine.
>
>Injectors: They are looking all the same with no dents,
>scratches or something else.
>
>At a test start, after ten seconds, the engine tries to
>start. I guess, only on the fuel provided by the cold start
>injector. But it is not that good to keep the engine running
>on idle.
>
>That's the point today, I will try to find something on the
>weekend. It would be fine to get some actions discussed, which
>should be done if I do not have any success next two days and
>I have to proceed next week.
>
>Thanks
>Helmut
>'80 (no) Vanagaudi
| 
