starting problems

hero637 · 13th October 2011, 15:39

we have a rover 75 with a 2 litre bmw diesel engine when its cold it starts first time but when the engine is warm it sometimes struggles to start can anyone help with a reason this is happening

Little-George · 13th October 2011, 16:01

Ditto that started when i fixed the thirmostat and got it running at temp.
Cam sensor somone told me as if i remember right its does the starting timing.
I may be wrong someone with more brain than me will put you right.

kissifer1972 · 13th October 2011, 16:06

Yes, that's right.

Usually if warm starting is a problem, it is down to the cam sensor.

It is located just in front of the oil filler cap. A simple check is to remove it when the engine is warm and put it in the freezer for a few minutes to cool it down quickly. Then re-fit and see if it now starts better?

There's a lot of info about the problem throughout this forum if you do a search for it.

Chris

Petetourer · 13th October 2011, 16:07

I would say that you need at least 1 new injector.... You would need to carry out a leakback test to confirm... Mine did exactly the same and it was the injectors...

Only other thing to check is the cam sensor...

pab · 13th October 2011, 16:48

Thread moved to the technical help forum,redirection left in the old location.

fragmented · 13th October 2011, 17:42

I've been fighting this issue for months.

Tried the cam sensor, didn't help for me.

I really don't know what to do. I haven't got a blank cheque to give to a garage to try and find out what's wrong.

I've also heard that the crank sensor could be causing it.
Also I read remove the map of maf sensor see if that makes any difference.

The car is now becoming hard to start even when cold.

I still love the car but this is driving [no pun intended] me up the wall.

I'm reasonably mechanically minded so any advice on the above, like where they are and what to try would be really appreciated.

John

fragmented · 13th October 2011, 18:14

Won't start at all now, so what's the order of things to check.

Pull to fuel line off and make sure it's being 'fed' seems a good place to start.

Little-George · 13th October 2011, 20:21

Asked my mechanically minded mate again about this. He told me, now this may sound crazy but hes a pretty good mechanic.

First he said check the fuel pump relay, its under the bonnet in the fuse box I believe. Have to look on here to find out exactly where. He said if its an intermittant fault it starts when hot and as you mentioned gets worse over time and finally gives out giving all the syptoms of a sensor. Even the diagnostics give conflicting readings Then its up to you which order to try things.
But start with the fuel flow. then go into the sensors, finally injectors and pumps.
I suppose hes giving me expense order.

Good luck

chris_h · 13th October 2011, 23:19

Get a can of easy start, spray it in to the air intake while cracking the end - two people makes this bit easier. If it starts then it is a good indication that you have a leak back problem with one or more of your injectors. You can do a leak back test to confirm this. You can get the injectors recomend for about 85.00 each.

fragmented · 14th October 2011, 06:32

Thanks for the advice guys.

The significant bit may the the 'easy start' bit that's what I do to get it started when it's playing up.

I'll get the injectors tested.

Thanks

13th October 2011, 15:39	#1
hero637 Newbie rover 75 Join Date: May 2011 Location: blackpool Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts	starting problems we have a rover 75 with a 2 litre bmw diesel engine when its cold it starts first time but when the engine is warm it sometimes struggles to start can anyone help with a reason this is happening

13th October 2011, 16:06	#3
kissifer1972 Posted a thing or two Rover 75 CDTi Conn Tourer & Rover 75 CDT Conn SE Saloon Join Date: May 2010 Location: Queensbury Posts: 1,368 Thanks: 0 Thanked 1 Time in 1 Post	Yes, that's right. Usually if warm starting is a problem, it is down to the cam sensor. It is located just in front of the oil filler cap. A simple check is to remove it when the engine is warm and put it in the freezer for a few minutes to cool it down quickly. Then re-fit and see if it now starts better? There's a lot of info about the problem throughout this forum if you do a search for it. Chris __________________ Mods so far X-Power Performance Upgrade LED interior lights and sidelights Genuine Rover Xenons - now removed and sold Kenlowe fan Synergy 2 EGR Bypass

13th October 2011, 16:07	#4
Petetourer This is my second home None at present Join Date: Sep 2010 Location: Portishead Posts: 5,337 Thanks: 203 Thanked 246 Times in 194 Posts	I would say that you need at least 1 new injector.... You would need to carry out a leakback test to confirm... Mine did exactly the same and it was the injectors... Only other thing to check is the cam sensor... __________________ My First Ever Rover!! A 2002 75 2.0 V6 Club SE Tourer Then a 2002 MG ZT-T CDTI + in Starlight Silver Then a 2003 ZT-T 2.5 V6 180 + in Royal Blue Then a 2002 Rover 75 2.0 CDTi Connie SE Then a 2003 ZT-T 2.0 CDTi + In Le Mans Green 2004 1.8T ZT-T + In Goodwood Green [SIGPIC][/SIGPIC]

13th October 2011, 16:01	#2
Little-George Avid contributor 75 Facelift Diesel 04, Auto Saloon Campaign Edition Leather Interior 151k Join Date: Oct 2010 Location: Argyll Posts: 190 Thanks: 2 Thanked 2 Times in 2 Posts	Ditto that started when i fixed the thirmostat and got it running at temp. Cam sensor somone told me as if i remember right its does the starting timing. I may be wrong someone with more brain than me will put you right.

13th October 2011, 16:48	#5
pab Banned MG ZT V6 190+ Join Date: Sep 2008 Location: Leeds Posts: 33,223 Thanks: 41 Thanked 1,614 Times in 1,416 Posts	Thread moved to the technical help forum,redirection left in the old location.

13th October 2011, 17:42	#6
fragmented Newbie rover 75 mg zt-t Join Date: Jan 2011 Location: solihull Posts: 18 Thanks: 0 Thanked 0 Times in 0 Posts	I've been fighting this issue for months. Tried the cam sensor, didn't help for me. I really don't know what to do. I haven't got a blank cheque to give to a garage to try and find out what's wrong. I've also heard that the crank sensor could be causing it. Also I read remove the map of maf sensor see if that makes any difference. The car is now becoming hard to start even when cold. I still love the car but this is driving [no pun intended] me up the wall. I'm reasonably mechanically minded so any advice on the above, like where they are and what to try would be really appreciated. John

13th October 2011, 18:14	#7
fragmented Newbie rover 75 mg zt-t Join Date: Jan 2011 Location: solihull Posts: 18 Thanks: 0 Thanked 0 Times in 0 Posts	Won't start at all now, so what's the order of things to check. Pull to fuel line off and make sure it's being 'fed' seems a good place to start.

13th October 2011, 20:21	#8
Little-George Avid contributor 75 Facelift Diesel 04, Auto Saloon Campaign Edition Leather Interior 151k Join Date: Oct 2010 Location: Argyll Posts: 190 Thanks: 2 Thanked 2 Times in 2 Posts	Asked my mechanically minded mate again about this. He told me, now this may sound crazy but hes a pretty good mechanic. First he said check the fuel pump relay, its under the bonnet in the fuse box I believe. Have to look on here to find out exactly where. He said if its an intermittant fault it starts when hot and as you mentioned gets worse over time and finally gives out giving all the syptoms of a sensor. Even the diagnostics give conflicting readings Then its up to you which order to try things. But start with the fuel flow. then go into the sensors, finally injectors and pumps. I suppose hes giving me expense order. Good luck

13th October 2011, 23:19	#9
chris_h Avid contributor rover 75 tourer Join Date: Mar 2008 Location: liphook Posts: 184 Thanks: 0 Thanked 7 Times in 7 Posts	Get a can of easy start, spray it in to the air intake while cracking the end - two people makes this bit easier. If it starts then it is a good indication that you have a leak back problem with one or more of your injectors. You can do a leak back test to confirm this. You can get the injectors recomend for about 85.00 each.

14th October 2011, 06:32	#10
fragmented Newbie rover 75 mg zt-t Join Date: Jan 2011 Location: solihull Posts: 18 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks for the advice guys. The significant bit may the the 'easy start' bit that's what I do to get it started when it's playing up. I'll get the injectors tested. Thanks