could the EVAP purge valve diaphragm fail open allow fuel vapours to
flood the intake and  cause  a hard arm start?

Neil.

On 8/25/12, Skip <skiplaubach@comcast.net> wrote:
> I posted this on thesamba.com without any response.  It seems like this
> family is more "problem-solving" focused, which is far more interesting.  I
> may have my hypothesis all wrong here, and will do more investigative fun
> tomorrow.  Thanks for any wisdom that may be offered on this one.  Skip
>
>
> Another "start phenomena" that I'm working through is the "hot start" issue,
> turns over and doesn't ignite. I've concluded that, when hot, the engine
> gets too much fuel, therefore is "flooded" and just turns over and over.
>
> Midway through the solution I discovered that if I depressed the clutch,
> keep it in second or first, depress the accelerator, after turning over a
> lot, it would start. Didn't always work. BTW, just tried the "release the
> EB" trick and that seemed to work (one data point). Why?
>
> Then last night, I drove 6 miles into town, bought some ice cream, etc.,
> went to start the Westy, and it just turned over and over, no start. Then,
> drawing from a dusty memory of a Samba post, I opened the engine cover and
> removed the fuel inj. connectors (three of four, #1 is not easily reachable
> under the air intake). Then, the engine started immediately and, of course,
> died soon after. Too much fuel theory confirmed?
>
> I reconnected the (fuel injector) connectors and the engine started
> immediately.
>
> So, my conclusion is that the Temp II sensor is telling the ECU that the
> engine is cold (even when it's hot), therefore too much fuel is being dumped
> on the pistons. It's a new Temp II sensor, so I'll put in the old one and
> see if there's a difference (you know what they (we) say about new
> parts...)
>
> However, I s'pose it's possible that the Temp II sensor is fine and that my
> ECU is not signaling correctly. Or...maybe it's not the ECU, but maybe it's
> the connector to the ECU? So, it's time to dig deep with the volt/ammeter.
>
> What say you?
> _________________
> Skip
> 1984 Westy 1.9 case WBXR Manual (now with 2200cc GoWesty kit)
> Since 26 July 2011
>

--
Neil n

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