Easy question Re Cold Start Prob -Priming Bulb - How Long Should It Maintain Pressure

Easy question Re Cold Start Prob -Priming Bulb - How Long Should It Maintain Pressure

Hi
MGZS 2.0TD 2004 140,000 miles

After pumping the "Priming Bulb" until it's nice and firm,

- if left for "a while"
- HOW LONG - should it "Stay Firm"
- (Approx) Few mins ? 1/4 hour ? Half an hour?
(read numerous cold start threads on the board - commonly mentioned to "Try Before Starting" but nobody answers the above)
.................................................. ............

Common annoying problem with cold starting
- just began, ie not a slow creeping insidious problem.

Only get it - first cold start of the day - rest of day - fine, starts 1st touch of key.

- battery been drop tested - fine
- power to glow plugs - fine
- the 3 accessible glow plugs physically removed - tested across battery, - bright radiant orange - fine
- no pending codes - read with Sykes P ACR4 - fine
- injector leak off hoses (inc return to pump) changed 6m ago - when did belts. All still tight, dry no splits/perishing/swelling etc
- fuel pipe condition to/from filter fuel fine
- temporarily put gasket sealant round fuel filter bleed bolt (Just to exclude)
- changed timing/aux/fuel pump belts 6m ago - rechecked timing and fuel pump timing - all pins go in perfect easy snug fit - fine
(As just began so to speak, not a creeping problem, and as rechecked - confident not belt stretch or cam sprocket slip)
- assume water temp wouldn't be a great factor, and that prob with sensor - would throw a code up.
- unions all checked at pump and injectors - fine.
- no signs of any leaks around timing/metering solenoids - or blanking bolt " where a useful spindle lock "should be" :o(
.................................................. ..............

Never had cause to check - a potential priming bulb problem
- so no idea if/how long it should maintain pressure
- assume should be a while - as bar actual fuel loss via injectors - it's a closed loop - after fuel filter - ie to pump, leak off back to pump etc.

So just thought I ask - the simple question I started with, to rule it out.

Any other - check - suggestions.... also welcome - in case I've missed anything.

Thanks GAZKAZ

---

Last edited by gazkaz; Today at 17:20.

Let's block ads! (Why?)

Easy question Re Cold Start Prob -Priming Bulb - How Long Should It Maintain Pressure