isuzu trooper '94 3.1 - fuel pump problem

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jude1952 - 02 Nov 2006 23:21 GMT

Hi my son has just bought an Isuzu Trooper, 3.1 diesel, 1994! after having to
put on a new starter motor,
things improved, but has a problem with the fuel pump, when using the motor
for the first time every day he has to prime the fuel pump by going under the
bonnet a doing this with some button on the fuel pump!!
does anyone else have to do this, seems quite wierd to me, who wants to be
having to lift the bonnet every morning before you can make a move. Once it
has been primed the motor starts ok for the rest of the day, just seems once
it has been stood overnight then it has to be primed, Does anyone know
anything about this
is this normal?! Are there any books sucxh as haynes for this motor as
haven't beena ble to find one so far,many thanks Jude.

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Pason - 02 Nov 2006 23:23 GMT

Maybe an air leak in the fuel system?

Ask here: http://www.itocuk.co.uk/forums/

> Hi my son has just bought an Isuzu Trooper, 3.1 diesel, 1994! after having to
> put on a new starter motor,
[quoted text clipped - 8 lines]
> is this normal?! Are there any books sucxh as haynes for this motor as
> haven't beena ble to find one so far,many thanks Jude.

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jude1952 - 02 Nov 2006 23:29 GMT

Thank you will get him to check it out,cheers.

>Maybe an air leak in the fuel system?
>
[quoted text clipped - 5 lines]
>> is this normal?! Are there any books sucxh as haynes for this motor as
>> haven't beena ble to find one so far,many thanks Jude.

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Mark - 03 Nov 2006 03:35 GMT

> Maybe an air leak in the fuel system?

more likely the fuel pressure regulator needs to be replaced. it's located (standing
in front of car) slightly on the right side of the throttle body, underneath. requires
a star-hex-socket, single bolt, cost about $25 at napa or adv auto parts.

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jude1952 - 03 Nov 2006 09:01 GMT

THANK YOU Will pass this on to my son and he can take it from there.

>> Maybe an air leak in the fuel system?
>
>more likely the fuel pressure regulator needs to be replaced. it's located (standing
>in front of car) slightly on the right side of the throttle body, underneath. requires
>a star-hex-socket, single bolt, cost about $25 at napa or adv auto parts.

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Mark - 03 Nov 2006 12:28 GMT

> THANK YOU Will pass this on to my son and he can take it from there.

just to clarify, it's the fuel pressure regulator that costs circa $25. lots of hoses
and clamps need to come off before access to the part and because some fuel will come
out, the work should be done in a very well ventilated area

post back if that fixed the issue

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Peter - 07 Nov 2006 08:26 GMT

>> Maybe an air leak in the fuel system?
>
> more likely the fuel pressure regulator needs to be replaced. it's
> located (standing in front of car) slightly on the right side of the
> throttle body, underneath. requires a star-hex-socket, single bolt, cost
> about $25 at napa or adv auto parts.

Somehow I dont think NAPA is selling parts for Isuzu Trooper diesel
engine... AFAIK it was never sold in USA

Peter

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