Date: Mon, 11 Jun 2001 22:58:01 -0500
Reply-To: "Smola, Tony" <TSmola@TRIBUNE.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "Smola, Tony" <TSmola@TRIBUNE.COM>
Subject: Re: Timing Question
Content-Type: text/plain; charset="iso-8859-1"
John, double check your timing. Remember with an advance timing light you
set the gun at 6 degrees and then line up the shallow groove on the pulley
on the case halves, not the v-notch, that is 5 degrees after TDC. If that
checks out ok then the next thing to do is to make sure that idle is within
specs for the timing at idle which is 900 plus or minus 50 rpms....I oculd
be a little off. The last thing regarding triple checking your timing is to
check the full advance, which is 42 degrees.....Just set the timing light at
42 degrees and raise the idle to 3500 rpms and rotate the distributor until
the the tdc mark (shallow groove) lines up on the case halves.
As far as your over rich fuel injection: check fuel pump pressure. If the
pressure is too high you will run rich. The temp sensors can also cause an
overrich condition if they think that the engine is colder than it actually
is. The fuel injection will enrichen the fuel mixture while cold to help
drivability. But, they should not be so rich that the inside of your exhaust
tip is blackened with soot. The carbon monoxide adjustment on the air flow
meter can also adjust air/fuel mixture. To help with drivability after
setting your timing, turn the screw out about 1 and a half turns from the
closed position. Your idle will vary from 1000 to 1300rpms but don't let
that bother you, it's overall drivability that you are looking for, if your
idle is a little high then that is going to have to be a small price to
pay.....Mine does the same thing as far as idle fluctuations....But I can
deal with that....Mine is a manual, so it really doesn't affect me. If you
have an automatic, you might want to see how low you can set the idle
without affecting the performance of the van. It is better to have the idle
a little too high than suffer from stalling being set too low. Also check
the oil filler cap to make sure it doesn't leak, this can affect idle. Also
the breather hose between the breather tower and the intake boot needs to be
in good shape and not collapsed. Try these things and let me know.....It
sounds like a temp sensor or fuel pressure is too high.....You want to be at
the low end of the fuel pressure range. How does your van do as far as smog
levels when the engine is timed at 5 degrees ATDC?...is it clean or is it
failing the smog limits?
Good luck and let me know
T
-----Original Message-----
From: jhlauterbach [mailto:jhlauterbach@msn.com]
Sent: Sunday, June 10, 2001 12:56 PM
To: Smola, Tony; vanagon@GERRY.VANAGON.COM
Subject: Re: Re: Timing Question
Tony, I have my '84 timed about the same point as your '85. Problem I am
having is that I cannot get the idle just where I want it. I put a new
auxiliary air regulator in yesterday along with some new vacuum tubing. I
have the idle screw backed out one full turn from full CW. If I run only
1/2 turn out, engine wants to stall about a minute or so after I start it
up. Digital idle stabilizer tries to keep up idle speed, but it cant; and
exhaust smells very rich. Right now with one turn out, idle after initial
start up is marginal. However, once van is fully warmed up, it wants to
idle in the 1000-1200 rpm range.
Any suggestions on next steps would be appreciated.
John Lauterbach
Macon, GA
----- Original Message -----
From: "Smola, Tony" <TSmola@TRIBUNE.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, June 08, 2001 1:49 AM
Subject: Re: Timing Question
> You just have to raise the rpms to around 3000 and then take your timing
> light and using the advance knob, turn the dial on the gun until the
shallow
> groove on the pulley lines up with the case halves. once you line the
mark
> up, you read what the dial on the timing light indicates.....that's it,
but
> you need to have a timing light with advance capabilities to set the
timing
> by total advance.
>
> T
>
> ps: the timing I am suggesting is to try to help those with the 1.9 L WBX
> motor whose timing is set at 5 degrees AFTER top dead center.....I would
> like to see them advance it to TDC or better yet 6 degrees BTDC with a
total
> advance of 42 degrees.....2.1's are set at 6 BTDC by the manual...you
could
> probably cheat a few degrees toward the advance....8-degrees maybe?
>
> Malibu Tony....85 westy 1.9L 6 degrees BTDC......42 degrees total
advance
> vacuum lines connected
> 1978 911SC targa 3.0L.......would kill you in no time if you had it's
> powerplant in a van
>
> -----Original Message-----
> From: Mark Keller [mailto:kelphoto@islandnet.com]
> Sent: Thursday, June 07, 2001 10:36 PM
> To: Smola, Tony
> Subject: Timing Question
>
>
> Hi Tony,
>
> I just read your signature line again about total timing. I'm curious
> about how to check or verify total timing. I would like to A, check
> mine as the Bentley say only 5 BTDC, and 35 +- 5 total. And B, suggest
> this to the list, as I suspect that more than one LOW POWER, van is
> suffering from a malfunction advance, be it vacuum or otherwise. Let's
> fix em!
>
> Sincerely,
>
> Mark Keller
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