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  Soarer Central * Mechanical - V8 * Fuel pumo replaced, still won't start ,,.. Help ! Previous Previous    Next Next  

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Sean Tonkin
Tinkerer
WA
Soarer V8

Posts: 7
Reg: 01-2009

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Saturday, January 24, 2009 - 05:44 am, by:  Sean Tonkin (Shorn) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Ok, I'm asking for "replace fuel pump" instructions for beginers. Stock fuel pump died (or at least i think it did). I've replaced it with a walbro 255 as it was, new and readily available. My car was already out of action for a week so I was getting a impatient. Anyway, i've installed the new one. Works fine. Could see the fuel coming out the top of it when i did a quick test before putting everything back together.

Car still won't start. Going to replace the fuel filter next. Mechanic "claimed" to have done it about a month ago but when i lookrd at it (under passenger side rear wheel) i don't think it has been replaced in years. so my questions are :

1) How do you get the bl**dy fuel filter off ? Had a go but stopped for fear of braking something.
2) Is there anyhting alse i should have done after putting in the new fuel pump ?

I'm sorry if these are basic issues that have already been discussed but i've done about 10 searches and nothing comes up that deals with a "how to" on this issue.

Any help would be really really appreciated.
Matt Petersen
TryHard
NA
V8

Posts: 429
Reg: 01-2008

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Saturday, January 24, 2009 - 07:00 am, by:  Matt Petersen (Mattmannz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

You should check for fuel at the fuel rail/injectors. I would be suprised if the fuel filter was completely blocked preventing the motor from running.

Remove the small plastic covers to expose the rail and crank the car for a bit to ensure that there should be fuel pressure up.

Surround the area with rags and crack open just a tiny bit one of the banjo bolts that hold the fuel lines to the rail. You should get weeping or obvious signs of fuel.

Be carefull as the fuel is at about 40psi so all the usual precautions are required.
Matthew Sharpe
Goo Roo
North Island
JZZ31

Posts: 4048
Reg: 10-2005

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Sunday, January 25, 2009 - 12:26 pm, by:  Matthew Sharpe (Madmatt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)


Matt Petersen wrote on Saturday, January 24, 2009 - 07:00 am:

Be carefull as the fuel is at about 40psi so all the usual precautions are required.




Yup, thats not what they mean when they say "fuel injection" =)
Tom Richards
TryHard
nsw
V8

Posts: 160
Reg: 08-2005

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Tuesday, February 03, 2009 - 11:38 am, by:  Tom Richards (Tomr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

on the lhs of the engine, near the pvc valve is a fuel regulator.

it has a round top on it with a philips head screw in the middle. after cranking the engine, the philips head will be "up' showing you have fuel pressure. if it doesnt come up, you have no fuel pressure. Also at the diagnostics port short FP to B+. this will put 12v direct to the fuel pump, bypassing the fuel pump ecu.
Sean Tonkin
Tinkerer
WA
Soarer V8

Posts: 8
Reg: 01-2009

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Thursday, February 05, 2009 - 03:57 pm, by:  Sean Tonkin (Shorn) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hey Matt, Mathew and Tom.

Thanks for your tips and advice. It helped me establish that the problem has nothing to do with the fuel pump. I've got fuel pressure all the way up to the engine.

It's just not starting. Maybe it's another electrical problem. It could be spark. It could be the injectors, i just don't know.

I get the feeling that this could be an expensive problem, which i simply cannot afford at the present time. It's been out of action for 3 weeks now and i have no transport. Getting more than a little frustrated.
Matt Petersen
TryHard
NA
V8

Posts: 451
Reg: 01-2008

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Thursday, February 05, 2009 - 04:06 pm, by:  Matt Petersen (Mattmannz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Next step is to check for spark which is pretty easy.

If you have fuel pressure at the rail it's unlikely, though not impossible, that all the injectors aren't firing. The injector drivers are batched so if it's an ECU fault then some of the injectors should be going.

To check for spark pull a plug on each side of the motor and leave it connected to the plug wire and lie the plug against the block. Crank the motor and check for spark at each side.

I assume you have checked the major fuses in the engine bay to eliminate the simple stuff.

Matt.
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder

Posts: 4574
Reg: 03-2006

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Thursday, February 05, 2009 - 05:02 pm, by:  Daniel Clarke (Dieseltrain) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Pop by a mechanic and see if they can put a connector light ( not sure of technical name ) intot he injector plug. It flashed when the signal pulses.

Is it an Ecu issue?
Sean Tonkin
Tinkerer
WA
Soarer V8

Posts: 9
Reg: 01-2009

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Friday, February 13, 2009 - 04:21 am, by:  Sean Tonkin (Shorn) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Well I've dropped the car into a mechanic i have trusted with all my previous vehicles. Let's see what he comes up with and i'll let you all know.

If he is stumped does anybody know of someone in perth WA that might have some expertise with soarers ?

As to the fuses, i checked all the fuses that i could see. Some, were just big box shapes with no windows so i'm not sure how to check those. Any suggestions ? All the other fuses were fine.

By the way, i've heard people refer to problems other than fuel delivery as being either spark or pulse ? What the hell is pulse ?
Sean Tonkin
Tinkerer
WA
Soarer V8

Posts: 10
Reg: 01-2009

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Friday, February 13, 2009 - 04:23 am, by:  Sean Tonkin (Shorn) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Oh by the way, many thanks again to all of you that have helped out. It takes a great deal of the frustration out of the whole process and is also a good way of learning. Cheers

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