fuel pump/ injector pump problems

[daveychipsngravy]

hey im looking for some help and direction , i have a 2001 d22 navara the zd30
and it wont start apparently due to a electrical problem with the fuel pump , i have been advised that i need to get a new/ recon fuel pump at a cost of around $2500 and labour im lookin at around $1500 im pretty keen to get a second opinion or at least a better price? can anyone point me in the right direction please? i am on the sunshine coast , Qld so if anyone knows of a good diesel mechanic around this area and anywhere i can get a cheaper pump from
PLEASE HELP??!?!?!
dave

 

[Old.Tony]

If a decent mechanic has diagnosed a fuel pump already then that's what it's likely to be.

Then again, they could be asking for muchos $ and not solve the problem - that's happened before.

It's reasonably easy to tell if your fuel pump is working. Squeeze the primer bulb until it's nice and hard then crank the engine over. Remove a glow plug. If you smell diesel, the pump's working and the injectors are opening. This would also indicate (quite strongly) that the glow plugs may not be working properly and that will make it hard to start!

What needs to happen is this:

* Fuel needs to be delivered to the injector so that when it opens, the fuel sprays into the chamber.

* This fuel is sprayed in at the right moment, according to the CAS (crank angle sensor) position.

* The right amount of fuel is sprayed in, this is calculated on engine RPM, throttle position, MAPS sensor response (airflow reading).

* The injectors have to open cleanly and allow the fuel in, then close. Sticky/worn injectors can cause problems here.

* The glow plugs MUST have heated up sufficiently to help the fuel to ignite. One glow plug should make the engine cough but still start. If they're all dead, either they're not getting any power (check fuse/relay) or there's a bad connection to them.

So, despite a diesel being reasonably simple, there are still a number of factors that could stop the engine from running (or even starting).

If someone's already done all this examination and determined that you're not getting any fuel pressure then yes, the pump is gone. Have a chat to Niss4x4.com (second hand) or nizzbits (a user here, send him a pm) for brand new. If you suspect you're being taken for a ride, start checking the bits that you can yourself.

 

[daveychipsngravy]

sorry there were a couple of things i didnt specify, i have had my regular mechanic put a diagnostic computer on my truck and it came up as "spill valve" now he was advised that it is most likely a problem with the electricals on top of the pump, but with a job that big they dont muck around and they just replace the whole pump, my regular mechanic is not a diesel specialist and has never had to replace fuel pump on a navara before and cos it is such a tricky job and time consuming (apparently 10 hours work) he would not be prepared to take on the task . the quote he got is from a diesel specialist in maroochydore somewhere.
so yeah any advice on where to source a fuel pump and recommended diesel mechanic would be greatly appreciated
dave

 

[daveychipsngravy]

thanks tony

If a decent mechanic has diagnosed a fuel pump already then that's what it's likely to be.

Then again, they could be asking for muchos $ and not solve the problem - that's happened before.

It's reasonably easy to tell if your fuel pump is working. Squeeze the primer bulb until it's nice and hard then crank the engine over. Remove a glow plug. If you smell diesel, the pump's working and the injectors are opening. This would also indicate (quite strongly) that the glow plugs may not be working properly and that will make it hard to start!

What needs to happen is this:

* Fuel needs to be delivered to the injector so that when it opens, the fuel sprays into the chamber.

* This fuel is sprayed in at the right moment, according to the CAS (crank angle sensor) position.

* The right amount of fuel is sprayed in, this is calculated on engine RPM, throttle position, MAPS sensor response (airflow reading).

* The injectors have to open cleanly and allow the fuel in, then close. Sticky/worn injectors can cause problems here.

* The glow plugs MUST have heated up sufficiently to help the fuel to ignite. One glow plug should make the engine cough but still start. If they're all dead, either they're not getting any power (check fuse/relay) or there's a bad connection to them.

So, despite a diesel being reasonably simple, there are still a number of factors that could stop the engine from running (or even starting).

If someone's already done all this examination and determined that you're not getting any fuel pressure then yes, the pump is gone. Have a chat to Niss4x4.com (second hand) or nizzbits (a user here, send him a pm) for brand new. If you suspect you're being taken for a ride, start checking the bits that you can yourself.

thanks heaps mate i have sent them both an inquiry , well see how i get on
cheers
dave

 

[tweak'e]

i would ask him what code they where reading off.

there is a common fault with one of the transistors in the circuit board on top of the pump. but it pays to check all the easy options as there is a quite a few miss diagnostics with these pumps. the most common one is air being sucked in and that causes timing faults.

 

[daveychipsngravy]

i would ask him what code they where reading off.

there is a common fault with one of the transistors in the circuit board on top of the pump. but it pays to check all the easy options as there is a quite a few miss diagnostics with these pumps. the most common one is air being sucked in and that causes timing faults.

thanks mate ill look into it
dave