Date: Sat, 14 Nov 2009 22:37:29 -0500
Reply-To: Chris S <szpejankowski@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Chris S <szpejankowski@GMAIL.COM>
Subject: Re: Fuel Injectors/Oil Cooler Leak
In-Reply-To: <9a28d9604e726aeface67f7ea83a28da@kc.rr.com>
Content-Type: text/plain; charset=UTF-8
I don't know where you live so I can't comment if the 20W50 is too thick for
the winter months. I'm using synthetic 15W50 and it does well all-year
round with good starting even on freezing temps. I live in Atlanta.
As for your hesitating, if your injectors are at fault they are relatively
easy to check. You can remove them from the cylinder head while leaving
lines connected and crank the engine to observe the spray cone. Our magical
Bentley has a procedure outlined on page 24.56 so you want to read that
first. It would not hurt to check AFM, throttle position sensor function as
well - see pages 24.57-on.
This is the order I'd go in:
Disconnect to O2 sensor (While the engine is off) and see if that changes
anything.
Temp II sensor check.
AFM, throttle position sensor
Injection spray cone check (borrow known good ones?)
2009/11/14 Sunshine <vwbusgirl@kc.rr.com>
> Hey All,
> My '89 Vanagon has been sluggish, hesitating, surging and missing out
> when I press on the throttle (or accelerate).
> When I let her sit for at least an hour, she seems to do better and
> then once she's heated a bit she does it again.
> She has been sluggish when I start her initially also.
>
> I have replaced the fuel pressure regulator, fuel pump, fuel filter,
> spark plug wires, spark plugs, rotor, distributor cap, all that good
> stuff and she ran fine for quite some time then this misfiring problem
> cropped up when it got colder and I also have a leak where the oil
> cooler O-ring is so I bought a new O-ring and plan on testing the oil
> cooler for it's proper functioning and then reinstalling it with the
> O-ring and AMV sealant.
>
> I have been considering it possible that the fuel injectors are dirty
> so I'm looking into rebuilt ones and is there any way I can rebuild and
> clean these myself?? If it's possible is it cost worthy compared to
> buying completely rebuilt ones?? I was reading about the throttle
> valve switch being out of adjustment and possibly just bad, could this
> be the culprit?
>
> Another thing is that with this leak at the oil cooler I wonder if
> during the winter months especially if I should be using a single
> heavier weight oil than the 20 W 50 I've been using?
>
> Thoughts and expertise would be appreciated.
>
> Peace, Love & VW Grease,
> Sunshine
> ~~~~~~~~~~~~~~~~~~~~~~
> '89 Vanagon GL - Wolfsburg Weekender Edition ("Stella Blue") *Daily
> Driver*
> '87 Vanagon GL ("Parts Van")
> '77 Westfalia Bus ("Sunshine Daydream")
> '74 Transporter Bus ("Buddy")
>
--
Chris S.
Disclaimer: "Death and serious injury may occur"
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