Fwd: Re: Fuel Filter

["C.M. Smith" <cmsmith@domain.elided>]

>To: Gregory Soh <s7700045@domain.elided>
>From: "C.M. Smith" <cmsmith@domain.elided>
>Subject: Re: Fuel Filter
>
>Hi Greg
>
>Yes, you should depressure the fuel system according to the shop manual. The 
>system maintains pressure for a long time to speed up restarts, I think 
>anyway. Eventually the pressure must bleed down but you'll not find out how 
>low it goes until you've sprayed gas all over the place (your face probably!).
>
>The shop manual specifies starting the engine, then removing the fuel pump 
>relay so that the engine draws fuel until it dies due to insufficient fuel 
>pressure. One would think removing the fuse would work as well, but the fuse 
>listing for my 91 does not include a fuel pump fuse?!!?  Seems ridiculous 
>not to have a fuse but there you go, maybe it's integral with the relay as 
>for some other items.
>
> The fuel pump relay is on the radiator cross member at the front of the 
>engine compartment. To the drivers side of the ignition coil, i.e. at the 
>base of the coil, are two black boxes. the one closest to the coil has the 
>fuel pump relay and the motronic relay. The one closest to the coil is the 
>fuel pump relay according to the 91 shop manual. Other years may be different.
>
>The other black box has the coolant fan relays in it.
>
>Be aware that there will likely be residual pressure in the fuel lines even 
>if you follow the factory method. Watch your face and have a container at 
>least the size of the filter to catch any spilling fuel.  Definitely be 
>extremely careful about even static sparks, this is not the lark it used to 
>be with the old low pressure carbureter systems.
>
>
> 

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