Help!! Please!!! :-/

p0tter · 12th September 2012, 20:06

Hey guys, my ZT CDTi has developed another problem.
It has started pulsing on tickover, running on a few times and now cutting out randomly on tickover.
Any ideas?
I'm thinking fuel pressure regulator?
Any help would be fantastic.

Scribbler. · 12th September 2012, 22:51

Wish I could help here p0tter but alas .. someone will be along shortly. ... BUMP .... Mike.

chrissyboy · 13th September 2012, 07:55

you need to read the car in order to find out the area of the problem .if no reading is done it could turn out to be an expensive guessing game .but it does sound like a fuel issue to me though

Trophy Blue Tourer · 13th September 2012, 09:28

I think I might try an injector leakback test??

Im fairly sure theres a "how to" try a search!

HTH?

Andy

p0tter · 13th September 2012, 09:41

I've recently had the injectors reconditioned so I'm assuming it's not them. I'll perform a leakback test anyway to rule them out.

I was thinking the running on was a sure sign the regulator was sticking. But maybe not.

Trophy Blue Tourer · 13th September 2012, 15:33

How about checking the comon rail preasure sensor plug/socket conection?? bit of corrosion or

??

I think French Mike has a "How too" for checking the fuel presure sensor thats in the fuel filter mounting??

Might be worth checking the presure reg for dirt in the fine mesh filter ?? - I belive several people have found that causing some funny symptoms?

Andy

James.uk · 13th September 2012, 16:16

Unplug your MAF and see if that helps.. Do you have synergy fitted?
...

p0tter · 13th September 2012, 18:35

Right...quick update.

I picked up a new reg on sale or return just incase it was that. On the way home, which is a 42 mile cross country commute, I struggled to keep it running on tickover and it seemed to struggle whenever I was cruising behind slow people. Eventually I got fed up and thrashed it passed a few people which it did very happily. Since then it hasn't been anywhere near as bad and the only symptom has been slight pulsing again on tickover which is not as bad as before.

I do have synergy on board,yes and I'll try unplugging the MAF tomorrow to see if this has any effect.

12th September 2012, 20:06	#1
p0tter Regular poster MG ZT Join Date: May 2012 Location: Stamford Posts: 88 Thanks: 0 Thanked 0 Times in 0 Posts	Help!! Please!!! :-/ Hey guys, my ZT CDTi has developed another problem. It has started pulsing on tickover, running on a few times and now cutting out randomly on tickover. Any ideas? I'm thinking fuel pressure regulator? Any help would be fantastic.

13th September 2012, 07:55	#3
chrissyboy This is my second home lovely little ford focus. Join Date: Jul 2009 Location: East Dulwich Posts: 7,877 Thanks: 2 Thanked 82 Times in 68 Posts	you need to read the car in order to find out the area of the problem .if no reading is done it could turn out to be an expensive guessing game .but it does sound like a fuel issue to me though __________________ [ I'm really confused. -I keep dreaming I'm an insomniac

12th September 2012, 22:51	#2
Scribbler. Gets stuck in Rover 75. Saloon. Red. V6. 2.5. Join Date: Mar 2009 Location: Poole Posts: 803 Thanks: 0 Thanked 97 Times in 22 Posts	Wish I could help here p0tter but alas .. someone will be along shortly. ... BUMP .... Mike.

13th September 2012, 09:28	#4
Trophy Blue Tourer Gets stuck in MG ZT-T Trophy Blue CDTI Join Date: Feb 2011 Location: Milton Keynes Posts: 883 Thanks: 11 Thanked 25 Times in 18 Posts	I think I might try an injector leakback test?? Im fairly sure theres a "how to" try a search! HTH? Andy

13th September 2012, 09:41	#5
p0tter Regular poster MG ZT Join Date: May 2012 Location: Stamford Posts: 88 Thanks: 0 Thanked 0 Times in 0 Posts	I've recently had the injectors reconditioned so I'm assuming it's not them. I'll perform a leakback test anyway to rule them out. I was thinking the running on was a sure sign the regulator was sticking. But maybe not.

13th September 2012, 15:33	#6
Trophy Blue Tourer Gets stuck in MG ZT-T Trophy Blue CDTI Join Date: Feb 2011 Location: Milton Keynes Posts: 883 Thanks: 11 Thanked 25 Times in 18 Posts	How about checking the comon rail preasure sensor plug/socket conection?? bit of corrosion or ?? I think French Mike has a "How too" for checking the fuel presure sensor thats in the fuel filter mounting?? Might be worth checking the presure reg for dirt in the fine mesh filter ?? - I belive several people have found that causing some funny symptoms? Andy

13th September 2012, 16:16	#7
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	Unplug your MAF and see if that helps.. Do you have synergy fitted? ...

13th September 2012, 18:35	#8
p0tter Regular poster MG ZT Join Date: May 2012 Location: Stamford Posts: 88 Thanks: 0 Thanked 0 Times in 0 Posts	Right...quick update. I picked up a new reg on sale or return just incase it was that. On the way home, which is a 42 mile cross country commute, I struggled to keep it running on tickover and it seemed to struggle whenever I was cruising behind slow people. Eventually I got fed up and thrashed it passed a few people which it did very happily. Since then it hasn't been anywhere near as bad and the only symptom has been slight pulsing again on tickover which is not as bad as before. I do have synergy on board,yes and I'll try unplugging the MAF tomorrow to see if this has any effect.