Which Glow Plug?

MULLEY · Post by **MULLEY** » Mon Feb 25, 2008 9:00 pm

Which one's do i need to fit my 1.9n/a 1992 TXD? I've seen loads on
e-bay, is there a particular brand thats worth spending the money on? do the cheaper one's just wear out quicker?

Sorry for all the questions, dont have a clue about these wonderful devices

Oh, & why'll i'm asking, does the turbo have different one's to the n/a?

jonathan_dyane · Post by **jonathan_dyane** » Mon Feb 25, 2008 9:34 pm

They're identical AFAIK, the NGK number is Y-924J. I would certainly go for a decent brand such as NGK or Bosch, and not Champion...

For some reason I have never had much luck with Beru plugs, but perhaps that is just my own experience!

ken newbold · Post by **ken newbold** » Tue Feb 26, 2008 8:51 am

I usually stick with the brand that was fitted in the last BX's I've broken up

but they seldom fail, so I wouldn't worry too much unless you're having starting problems.

MULLEY · Post by **MULLEY** » Tue Feb 26, 2008 6:42 pm

Not sure, fires up ok, however does run quite rough to begin with, then after about 20-30 seconds seems fine? are they on the way out, or is it just a typical xud engine?

AndersDK · Post by **AndersDK** » Sun Mar 09, 2008 11:08 am

MULLEY wrote:Not sure, fires up ok, however does run quite rough to begin with, then after about 20-30 seconds seems fine? are they on the way out, or is it just a typical xud engine?

The glow plugs are NOT operating for 20-30 seconds after engine start. You cant blame the plugs then.

BX glowplugs runs for some 10 seconds maximum after glowplug timer lamp extinguishes. This is determined by the glowplug timer relay - not the plug type.

I'm pretty sure you have an air leak problem in the fuel lines. Its the most obvious problem on elderly diesel cars.
For some reason owners never seem to believe that "some air" in the fuel lines of a diesel is a problem - big problem - non-starter problem in fact.

Replace the last bit of fuel line from filter to the diesel pump with a clear PVC line. Any ever so small air bubble seen during engine running is an absolute NO-GO.
The air upsets the fuel metering in the diesel pump, which then makes for difficult starting, rough running and un-even pulling power.
Most simple proof is that starting becomes easier if you pump the knob on the diesel filter initially.

Also on any BX diesel variant you have the coldstart waxstat cylinder to modify the cold start injection timing (it NOT a choke to enrichen fuel).
The cable from this cylinder must pull the timing actuator arm hard against the endstop, and then with hot engine release the actuator arm by minimum 6mm on the cable.
On turbo diesels the cable pulls on a springloaded switch that provides earth path for a timing modifier solonoid on the pump. Same adjustment applies.
Mostly the waxstat cylinder is stuck in-operable in cold start position after 8-10 years. Its approx £30 new part. Makes coldstarting a doddle - but noisy - in cold mornings. And reverts hot running to a nice ticking diesel.

DavidRutherford · Post by **DavidRutherford** » Sun Mar 09, 2008 11:16 am

AndersDK wrote:
MULLEY wrote:Not sure, fires up ok, however does run quite rough to begin with, then after about 20-30 seconds seems fine? are they on the way out, or is it just a typical xud engine?
The glow plugs are NOT operating for 20-30 seconds after engine start. You cant blame the plugs then.

Well, you might be able to, as if the engine is starting on 3 cylinders due to a dead plug, then it will splutter and smoke for a while until the 4th cylinder decides to join in....

Actually, thinking about it, I'd expect that to be the problem rather than an air leak, as it fires up OK. If it were an air leak, then I'd expect it to be a right pain to start, needing a lot of cranking.

The waxstats are something I've commented on in the past. I've yet to own an XUD with a working waxstat of any sort, and I've never had any problems.