Patrol - Diesel Injector Pump woe’s...any experts

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Diesel Injector Pump woe’s...any experts

Printed From: Club Nissan
Category: Model Specific
Forum Name: Patrol
Forum Discription: A forum for Patrol owners
URL: http://www.forum.clubnissan.co.uk/forum_posts.asp?TID=4946
Printed Date: 02 May 2025 at 02:52
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Topic: Diesel Injector Pump woe’s...any experts

Posted By: Mjtray
Subject: Diesel Injector Pump woe’s...any experts
Date Posted: 11 November 2011 at 15:19

Hi

I have a 1999 Patrol 2.8 diesel and I'm having a couple
of issues with it.

Its got a weird problem, that goes as follows....drive
the car at a steady speed and every 3 seconds you get a
dose of diesel rattle (just like when a petrol engine
"Pinks" under load). This will also be accompanied by a
bit of a surge.

Apparently when I'm followed you get a puff of black
smoke from the exhaust which coincides with the rattle.

All thoughts are that the rattle is an over fuelling
situation, hence the puff of black smoke.

Car has been into a 4x4 specialist who has checked
through all of the vacumn hoses, intercooler pipes and
the intercooler itself looking for air leaks. MAF has
also been checked and everything checks out OK.

So now the finger is being pointed at the main Injector
Pump unit itself.......interestingly when the engine is
being rev'd from idle you can get the engine to rattle at
the same 3 second interval, which also coincides with a
very faint click coming from within the Injector Pump
itself.

Question......do these pumps have any known faults...has
anybody experienced this problem themselves.....does the
pump need a full overhaul or are there any solenoids or
sensors that can fail which would cause this fault?????

Many thanks