[928uk] No Start

[JDSPorsche]

Hi Rob
The fuel pump shouldn't run until the engine is turning and the car has 
a spark.  It's an output pulse from the EZ-F ignition ECU that drive the 
rev counter and wakes up the LH fuel injection ECU.

So as a first check, see if the rev counter moves  when the engine is 
cranked.

Regards

JDS

On 21/09/2019 16:01, robert jones via 928uk wrote:
> Hi Guys
>
> I haven't tried to start my 928 for 6-7 months but I did last weekend 
> and it cranks ok, but there is no attempt to fire. I have gone into no 
> start diagnostic checks before, but my garage is a bit narrow to open 
> the passenger door fully to get to the electrical board.
>
> After cranking there was no odour of petrol from the exhaust so I am 
> starting on the basis of fuel relay or fuel pump issues. My question 
> is should the fuel pump run continuously with the ignition on? At 
> least that is easier to get to at present.
>
> Many thanks in advance.
>
> Rob Jones
> '86 S2

-- 
Regards

John
www.jdsporsche.com
+44 (0)1223 709915


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