Comon rail injector problems

Comon rail injector problems

Author
Discussion

crossy67

Original Poster:

1,570 posts

186 months

Monday 15th December 2014
quotequote all
Hi.

I have a Peugeot 307 1.6 110HDI coming for me to change an injector later this week. I really don't want to get involved truth be told but he's a friend and somehow I seem to have been roped in despite telling him I don't want to touch the car. Any way, it's smoking quite heavily under boost, we checked the injector correction values and there is one with a very high reading compared to the other three, number 4 iirc.

Am I right in thinking that if say no4 is correcting a lot it will be doing so for another injector's problem.

Any help appreciated.

Ta

Disco_Biscuit

837 posts

201 months

Monday 15th December 2014
quotequote all
Yes as far as I'm aware it could be correcting for a weak injector, have you done a back leakage test? No 4 in a French car is crank pulley end also, not a nice job as all rocker cover/manifold has to come off.

crossy67

Original Poster:

1,570 posts

186 months

Friday 19th December 2014
quotequote all
Thanks for the advice. Changed number 4 for a used injector and the reading is much more acceptable now. It had been hosing as there was a liter more oil in than there should have been.

Matt Seabrook

563 posts

258 months

Saturday 20th December 2014
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Did you code the replacement injector back to the ECU?

crossy67

Original Poster:

1,570 posts

186 months

Saturday 20th December 2014
quotequote all
Yessmile

Matt Seabrook

563 posts

258 months

Sunday 21st December 2014
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Cool beer

crossy67

Original Poster:

1,570 posts

186 months

Sunday 21st December 2014
quotequote all
It's still smoking though. Glad I told him I didn't want to get involved before I started and he persuaded me to.

Matt Seabrook

563 posts

258 months

Sunday 21st December 2014
quotequote all
The problem with the coding though is it great when the injectors are new but old and worn injectors will not have the same fueling that the code represents. Is the engine mechanically sound? Still sounds like you have seen the back of this one so doesn't matter anyway.

crossy67

Original Poster:

1,570 posts

186 months

Sunday 21st December 2014
quotequote all
I have my doubts about the state of the turbo, there is longitudinal play! I'm quite happy working on most things, even whilst struggling to get up to speed but these engines just seem so fragile.

We used to have three of the old Experts 110hdi as vans, they were great but getting on. I asked a few customers what they thought of the new one,not a single one had anything good to say about the 1.6HDi engine. A French customer of mine over here has a 308 that he has had enough of, in 12 months it's had new turbo, injectors, DMF and clutch. for a French man o say he's finished with Peugeot it takes a lot!

Gerradi

1,647 posts

127 months

Monday 29th December 2014
quotequote all
Failing injectors on these engines can contribute to turbo failure, if there is any crud build up around the injector because of a seal leak then the oil will be contaminated & the turbo will have a problem. If the turbo is already suspect then when you replace do not forget to renew the turbo oil feed pipe, people fit "new" turbo's but use the old pipe & a few thousand miles later another turbo bite's the dust! The fine mesh in these pipes clog up with the crud caused by the leaky injector & hence turbo failure, the mesh is overkill, take it out( of the new pipe) altogether & from then on change oil every 3 -4000miles.

Upatdawn

2,187 posts

155 months

Monday 29th December 2014
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try a leak off test


crossy67

Original Poster:

1,570 posts

186 months

Monday 29th December 2014
quotequote all
Thanks a lot for the help and advice chaps. I can monitor the fuel trim on the scanner and saw that No4 was trimming back like mad, the rest didn't seem bad but after changing number 4 the car is still smoking heavily. I suspect number 3 but to be honest what Gerradi says sounds about right, therefore I don't want to get any more involved.

The owner is broke and so is his car, I know he has driven it for ages with blown injector seals and there is a lot of play in his turbo. I've told him to get shut but he can't afford to, can't afford to fix or flog, not a nice position to be in eh. He bought the car cheap and now he's realising why they are so cheap.