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[macabethiele]

The WJ 2.7 CRD  has always started first time - this morning I cranked her over without letting the yellow glow plug light go out - it fired for a couple of seconds then stalled.

I tried again ensuring that the glow plug light was out - it cranked over as normal but just would not fire. If it was as if it was flooded. I went out in our other Jeep instead.

When I returned a couple of hours later it fired up first thing as usual !!

Anyone know if a diesel can exhibit such symptoms similar to flooding a petrol engine?

Could the engine have run backwards briefly and emptied a fuel line??

[IrishKenCJ7]

Don;t think diesel can be flooded. Sounds more like an air lock or possible dirty/gelled fuel that might have clogged an injector.
Might just be the cold diesel that went into engine heated up during the day and started easier, as the glow plugs did not heat long enough in the cooler morning.
Ken

[macabethiele]

This morning it was a repeat performance started & ran for 2 seconds then stopped - will not re-start I am wondering if it's linked to the cold snap ?

[Jonny Jeep]

Could it possibly be bad glow plugs? If you have a multimeter you can pull the connector off and measure the resistance between the top of the plug and the block. All should be similar low resistances.

[Dave69]

if you have one bad glow plug the electrical load will then be taken by the other and cause premature wear on the remaining plugs. i wouldn't think glow plugs would be an issue but more like a perished o ring in a fuel delivery line allowing air into the system and losing delivery pressure.

check the fuel filter for condition as that should be an easy check and could be blocked

[Dutch]

Ahhh .. now I have to dig back into my woes with the 2.7 CRD .........  and there were plenty.

If it starts, it starts so here glowplugs do not come into the equation.  It hasn't been cold enough to affect that and glow plugs do not keep your engine running.  However it dies shortly after fire-up that leads me to a fuel pressure issue.

IIRC 2.7's have plastic fuel lines all held together with grommets that can perish/degrade and a high pressure and low pressure pump.  As Dave said I think you have to look into fuel pressure loss through brittle fuel lines letting air in or faulty pressure pumps.

I'll have a trawl through my historic posts on the subject.

[Dutch]

There is tons & tons of info on WJ 2.7 CRD fuel pressure issues on here.

In the seach box look for "fuel pressure'

Have a look at this one and the embedded links to other threads in the piece

http://www.birtydastards.com/frm/index.php?topic=17354.msg201005;topicseen#msg201005

It isn't good reading so I hope you're sitting down 

[macabethiele]

Tried some Easy Start and she fired up and kept running so I guess it's a fuelling issue it had a new pump last year so might be air getting into the system as per links.

The fuel filter is due for replacement - last done 45k miles ago, put £15.00 worth of fuel in and she has started as normal ever since!

Early days yet though.

[AdrianD]

I'd start with the easy ones. Previous experience was that start, then stall, then long crank to restart = old fuel filter and less than perfect fuel line o-rings (filter to low-pressure pump).

[macabethiele]

Yesterday new fuel filter fitted - the air bubbles / stream in the pipes  disappeared  on idle- started first time this morning - not done that for the last couple of weeks.

Old fiter I had replaced in 2015 but it has done 45k miles since then. My own fault for not replacing after 20k miles as per my service schedule.

[gazjeep]

Hopefully all sorted then, always good when a simple fix works 

[macabethiele]

Well for two weeks after fuel filter changed all was good with great hot & cold starts.

Problem has now returned - when fuel tank is full it starts brilliantly - no air in fuel lines visible. As fuel level drops the problem seems to return - worse when engine is between cold & normal?

Could it be pulling air in via fuel tank connections?

This morning (Sat 9/11/19) she started instantly, moved her about on the drive, switched off having seen loads of air in the fuel pipes in & out of the low pressure pump.

Then would not start - too much air in the system again - it started when I used Easy Start. Seems as though the overnight frost has shrunk something & allowed air into the system. Really frustrating after 5 years of faultless starting.

I have ordered a set of the 3 low pressure fuel pipes that run over the engine - see if this cures the problem.

[macabethiele]

Problem sorted by fitting three new low pressure fuel pipes in the engine area - kit from fleabay.

[frosty 1]

good that you have fixed it, but don't use easy start, it can break the piston rings.

[gazjeep]

Glad to hear your sorted & hopefully for not much cash.

And thanks for posting the answer as this will help others no doubt 

[macabethiele]

good that you have fixed it, but don't use easy start, it can break the piston rings.

Basically I used the East Start to get it to my Garage for diagnosis & repair I would never use it except in an emergency.

You are right it can make some noise if you follow the instruction and spray it directly into the air intake. I am sure overuse would blow an engine - I just undid the air filter clips and squirted some into the box. Re-fitted the clips gave it some cranking so it would run for a second or two to get some fuel pumping.

TBH I was more worried about the crankshaft so cranked it over first to circulate the oil before using it- all sorted now with the fuel pipe replacements.