Hi Dan,

Does it consistently perform this way - or from time to time?  Based on
what you are describing I have a similar issue but performance - or lack
thereof tends to occur at a certain point during warm up - not when the van
is cold as that is where it seems to run the best - but as it warms up. It
then begins to get better when it reaches reg operating temp - where it
usually behaves well.

86 Westy Syncro -

Bruce

On Mon, Apr 19, 2021 at 10:13 AM Dan N <dn92610@gmail.com> wrote:

> hi all,
>
> my 89 tintop Syncro has this weird issue that I try to find how to fix...
>
> From standing still in 1st gear the van (empty van) is very unresponsive,
> something like it has no power at all, slow moving. If I rev it up to
> between 2K rpm to 3K rpm, the power comes up and it moves, like normal as
> it should - otherwise once it's running it works fine all gears, no lack of
> power.
> If I stop, put it in 1st gear then it did the same again, engine cold or
> warm it doesn't matter.
>
> I did the followings:
> - check vacuum - no leak
> - check TPS - it clicks well as it should
> - new spark plugs NGK BP6ET
> - new dist. cap and rotor
> - new fuel pressure regulator
> - new fuel filter
> - new Temp2 sensor at the thermostat housing.
> - new Oxygen sensor at the cat
> - air filter is very clean
> - put in a spare AFM - and another one - no change
> - spark plugs color is grayish, not white and not brown.
>
> The one thing I guess is the valves are not opening/closing correctly (on
> one o2 2 cylinders), not checking this yet.
>
> I am lost... Please help if you have any idea.
>
> thanks in advance
>
>
> thanks in advance
>