Starting Problem first thing

whosthedaddy07 · **Posted:** Sat May 28, 2011 3:05 pm

Wobbly wrote:

I read that a COV runs about 35 USD for a Cumins. It's the same valve with a stiffer spring to increase pressure. Our CRD needs a 5 Bar COV.

Are you sure that the injector lines are tight? I read that they may be tight enough so that there's no external leakage, but they will allow internal leakage to the return line if not torqued down properly.

There's also a test setup to determine injector return leak rates. However, I think you wrote that your injectors are new. So this would probably be an unnecessary test.

Yes ive had leak back tests all fine, the pressure test was good thou it was pressured then smoke added in with it, ill have another check for external leaks tomorrow i did have the engine steam cleaned a few weeks ago so there should be some tell tails if there is any plus ill check that the injector lines are tight, still might try a inline lift pump still, so does the cummins cov fit the 2.8crd then if so do you know which model does ?

Wobbly · **Posted:** Sat May 28, 2011 4:33 pm

whosthedaddy07 wrote:

Wobbly wrote:

I read that a COV runs about 35 USD for a Cumins. It's the same valve with a stiffer spring to increase pressure. Our CRD needs a 5 Bar COV.

Are you sure that the injector lines are tight? I read that they may be tight enough so that there's no external leakage, but they will allow internal leakage to the return line if not torqued down properly.

There's also a test setup to determine injector return leak rates. However, I think you wrote that your injectors are new. So this would probably be an unnecessary test.

Yes ive had leak back tests all fine, the pressure test was good thou it was pressured then smoke added in with it, ill have another check for external leaks tomorrow i did have the engine steam cleaned a few weeks ago so there should be some tell tails if there is any plus ill check that the injector lines are tight, still might try a inline lift pump still, so does the cummins cov fit the 2.8crd then if so do you know which model does ?

The COV for a Cumins would increase the pump case pressure too much. You need the correct COV for the CRD's pump. A Bosch Diesel Service Center shop should be able to provide it. You might call VM Diesel Specialist in Chesterfield for their advice as to whether the COV is a likely culprit, or to suggest another approach.

whosthedaddy07 · **Posted:** Sat May 28, 2011 4:41 pm

Wobbly wrote:

whosthedaddy07 wrote:

Wobbly wrote:

I read that a COV runs about 35 USD for a Cumins. It's the same valve with a stiffer spring to increase pressure. Our CRD needs a 5 Bar COV.

Are you sure that the injector lines are tight? I read that they may be tight enough so that there's no external leakage, but they will allow internal leakage to the return line if not torqued down properly.

There's also a test setup to determine injector return leak rates. However, I think you wrote that your injectors are new. So this would probably be an unnecessary test.

Yes ive had leak back tests all fine, the pressure test was good thou it was pressured then smoke added in with it, ill have another check for external leaks tomorrow i did have the engine steam cleaned a few weeks ago so there should be some tell tails if there is any plus ill check that the injector lines are tight, still might try a inline lift pump still, so does the cummins cov fit the 2.8crd then if so do you know which model does ?

The COV for a Cumins would increase the pump case pressure too much. You need the correct COV for the CRD's pump. A Bosch Diesel Service Center shop should be able to provide it. You might call VM Diesel Specialist in Chesterfield for their advice as to whether the COV is a likely culprit, or to suggest another approach.

Thanks for that, ill look up some number and ill do some phoning around monday

whosthedaddy07 · **Posted:** Sat Jun 04, 2011 11:25 am

Hi.......My wife decided to tell me today that the jeep as started first time for the last 2 day and 2 times last week i dont know if this is to do with the weather it been 18c or 60f here but it didnt start first time this morning , the other thing is does a 2005 2.5crd high pressure fuel pump fit the 2005 2.8crd as a lad at works offered me 1 for free looks the same in a picture he showed me but theres no part number he said or is th cov valve the same to swop over any ideas ???

whosthedaddy07 · **Posted:** Tue Jun 07, 2011 3:20 pm

whosthedaddy07 wrote:

Hi.......My wife decided to tell me today that the jeep as started first time for the last 2 day and 2 times last week i dont know if this is to do with the weather it been 18c or 60f here but it didnt start first time this morning , the other thing is does a 2005 2.5crd high pressure fuel pump fit the 2005 2.8crd as a lad at works offered me 1 for free looks the same in a picture he showed me but theres no part number he said or is th cov valve the same to swop over any ideas ???

Where is the COV and what does the COV Valve look like im not a mechanic and my mechanics never heard of it ?

Wobbly · **Posted:** Tue Jun 07, 2011 5:42 pm

whosthedaddy07 wrote:

Hi.......My wife decided to tell me today that the jeep as started first time for the last 2 day and 2 times last week i dont know if this is to do with the weather it been 18c or 60f here but it didnt start first time this morning , the other thing is does a 2005 2.5crd high pressure fuel pump fit the 2005 2.8crd as a lad at works offered me 1 for free looks the same in a picture he showed me but theres no part number he said or is th cov valve the same to swop over any ideas ???

Where is the COV and what does the COV Valve look like im not a mechanic and my mechanics never heard of it ?

The COV is located on the front cover of the high pressure pump.
viewtopic.php?f=5&t=25047&p=249350&hilit=injection+pump#p249350

http://www.genosgarage.com/prodinfo.asp ... 0N-200-798

whosthedaddy07 · **Posted:** Wed Jun 08, 2011 2:18 pm

Wobbly wrote:

whosthedaddy07 wrote:

Hi.......My wife decided to tell me today that the jeep as started first time for the last 2 day and 2 times last week i dont know if this is to do with the weather it been 18c or 60f here but it didnt start first time this morning , the other thing is does a 2005 2.5crd high pressure fuel pump fit the 2005 2.8crd as a lad at works offered me 1 for free looks the same in a picture he showed me but theres no part number he said or is th cov valve the same to swop over any ideas ???

Where is the COV and what does the COV Valve look like im not a mechanic and my mechanics never heard of it ?

The COV is located on the front cover of the high pressure pump.
viewtopic.php?f=5&t=25047&p=249350&hilit=injection+pump#p249350

http://www.genosgarage.com/prodinfo.asp ... 0N-200-798

Thanks for that, does the cov valve fit in the end of the solenoid on some models as a chap at work said he thought it did , does that cov fit jeeps or do you know where to get one cause beleave it or not i spoke to my local jeep spares department yesterday and they ask me what it was and what it fitted when i told them they asked me for a part number as they couldnt find details of it, NO HOPE There i might as well be talkin to a brick wall :-(

Wobbly · **Posted:** Wed Jun 08, 2011 6:24 pm

whosthedaddy07 wrote:

Thanks for that, does the cov valve fit in the end of the solenoid on some models as a chap at work said he thought it did , does that cov fit jeeps or do you know where to get one cause beleave it or not i spoke to my local jeep spares department yesterday and they ask me what it was and what it fitted when i told them they asked me for a part number as they couldnt find details of it, NO HOPE There i might as well be talkin to a brick wall :-(

Jeep doesn't sell the COV as a repair part. You need to talk to a Bosch Diesel Service Centre or similar shop which rebuilds Bosch injection pumps. Google "Bosch Diesel Service Centre UK".

whosthedaddy07 · **Posted:** Sat Jun 25, 2011 4:36 pm

Ive spoken to a bosch high pressure fuel pump specialist they want £70 to test it but the closest place is 70 miles away so ive got to post it for a next day service , so im waiting till my next holiday break in a few weeks time when i can do without the jeep , meanwhile ive fitted a inline lift pump between the fuel filter and the fuel pump the jeeps been starting first time now and any time of the day yippee :-)

papaindigo · **Posted:** Sat Jun 25, 2011 5:20 pm

whosthedaddy07 sorry for jumping in late on this but I note in an earlier post that you mentioned steam cleaning the engine. Did you have the starting problem before the steam cleaning? I ask because several members have reported very odd electrical problems occuring after a heavy engine washing such as pressure cleaning. Just a thought.

In most cases the problems went away after things dried out or various electical plugs were opened and dried out.

EDIT - never mind looks like my post and whosthedaddy07's most recent post crossed in the ether and the problem is on the way to a solution.

Wobbly · **Posted:** Sun Jun 26, 2011 9:28 am

whosthedaddy07 wrote:

Ive spoken to a bosch high pressure fuel pump specialist they want £70 to test it but the closest place is 70 miles away so ive got to post it for a next day service , so im waiting till my next holiday break in a few weeks time when i can do without the jeep , meanwhile ive fitted a inline lift pump between the fuel filter and the fuel pump the jeeps been starting first time now and any time of the day yippee :-)

This seems to confirm that the IP is losing its prime, and that there were no air leaks in the piping from the tank to the IP.

racertracer · **Posted:** Sun Jun 26, 2011 11:17 am

Before washing the engine, use di-electric grease inside the electrical connectors where they mate, don't worry if some of the grease oozes out, that's what you want it to do. Seal the connectors where they mate.

I don't worry going through puddles.

whosthedaddy07 · **Posted:** Sun Jun 26, 2011 4:46 pm

papaindigo wrote:

whosthedaddy07 sorry for jumping in late on this but I note in an earlier post that you mentioned steam cleaning the engine. Did you have the starting problem before the steam cleaning? I ask because several members have reported very odd electrical problems occuring after a heavy engine washing such as pressure cleaning. Just a thought.

In most cases the problems went away after things dried out or various electical plugs were opened and dried out.

EDIT - never mind looks like my post and whosthedaddy07's most recent post crossed in the ether and the problem is on the way to a solution.

Sorry for a late reply i had the engine steam cleaned after i had the glow plugs replaced i had to have the cylinder head off as number 3 blow plug was carboned on to the head exspensive but the hard start issue started before that glow plug problem as ive just mentioned ive put a lift pump in and the jeep starts first time every time so it looks to be the fuel pump

Starting Problem first thing

Who is online