Date: Fri, 30 Sep 2011 22:20:19 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Van won't run right - troubleshooting help, more
In-Reply-To: <20110930111916.92511lb46prk2c68@mail.planetmind.net>
Content-Type: text/plain; charset="US-ASCII"
Too much fuel could be flooding it. Un plug all the injectors and then crank
the engine with the throttle open. If it suddenly starts to spit and may
start you know it was flooded out. Common cause for this is a bad connection
or ground connection for the temp 2 sensor.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
David Hardy
Sent: Friday, September 30, 2011 1:19 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Van won't run right - troubleshooting help, more
OK, so now it won't start at all, not even fire. All I get is these strange,
random puffs out the exhaust, like one every 1-2 secs of cranking.
I've swapped in my spare fuel pump; no change. Put in new fuel filter, no
change. I pulled the injectors on one side and cranked - they ARE spraying.
There is pressure in fuel lines. Pulled 2 plugs and cranked:
good sparks. gaps are fine.
I went thru all the tests on the ECU plug on the Bentley. Everything checked
out. As I said, I swapped in a space ECU; no effect. (also swapped out AFM,
distributor and coil).
I pulled a valve cover and the valves are moving. The plug wires are in the
right order and place. Never touched the timing. I checked compression in
#4, and it's normal.
So it's getting spark, fuel, air and as compression. I can't believe it
won't even fire. I thought I knew this engine pretty well, but I'm out of
ideas.
David
Quoting "Ken Wilford" <kenwilfy@comcast.net>:
> David, the first thing you need to look at is what is happening when
> it won't start. If it has spark but won't fire then you want to check
> to see if your injectors are spraying. If they are working then put
> your hand in front of the tail pipe to be sure that the exhaust is
> getting out (no clogged cat) when you crank the van over. If all of
> these things are working and it still won't start then it is possible
> that there is a sender in the FI system that is causing the van to
> flood out. Most of the time if this is the case with your van, it is
> the Temp II sensor on the thermostat housing. You can test for this
> by unplugging it and then using a paper clip to jumper the two prongs
> in the plug to each other. Now try to start the van. If it starts
> right up then you know that it is the temp II sensor that has gone
> bad. If it still won't start, try unplugging the oxygen sensor. The
> van will run fine without it plugged in and sometimes they can fail
> and cause the van to run super rich (flooded).
>
> If none of these work, I would check your spark plugs for fouling and
> proper gap and also your cap and rotor. If you go one thing at a
> time, step by step, you will find the problem.
>
> If you need any other help please let me know.
>
> --
> Thanks,
> Ken Wilford
> John 3:16
> www.vanagain.com
> Phone: 856-327-4936
> Fax: 856-327-2242
>
> On 9/29/2011 3:56 PM, david hardy wrote:
>> So I have this issue with my '86 Westy that's got me
>> stumped...yesterday it started missing a
>> tad, then just it quit on me in the middle of traffic (luckily a
>> block from my house) after
>> running great all day. It would turn over but just not fire. After
>> tons of cranking I got it
>> started again, but it was running really rough, no power, very
>> unbalanced, coughs and sputters
>> when trying to rev it. It seemed to go between running perfectly
>> then terribly every few
>> seconds. I got it home and it's getting spark, fuel pump is working
>> (pump runs and there's
>> pressure in lines). Have also have a 1990 Westy, so I swapped out
>> the AFM (no change), coil (no
>> change), ECU (no change) and the distributor (no change). Funny
>> thing is, this morning, it
>> started perfectly, but then immediately started running really
>> rough like before. And now it
>> won't start (no ignition at all) again.
>>
>> I've had this issue a few times before, but it's always cleared
>> itself up within a minute or
>> two. Now I guess whatever was failing has done so for good. Anyone
>> have any ideas?
>>
>> Thanks in advance.
>>
>> David
>>
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
David Hardy
Planetmind Internetworks
Nedernet, Inc.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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