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I have a D40 2.5d auto with 308k on it. It had a burst hot pipe which led to the DPF needing to be replaced. That done it runs fine. However instead of getting 550ks to a tank round town i now getting 350k. It smells like its overfuelling to me and i getting smell inside car. The exhaust has...

Its in the plastic elbow that pushes into front of booster attached to hose from vac pump.

And to all those who wanted to pontificate on whether i should or should not be working on my car remember your opinion doesnt count if its not on the subject. To all those who kept on topic i value your opinion.

Yep i did. It was the check valve. After replacing brake fluid got better brakes than it had from new i think. Maybe the 550 booster helped that. Thanks for your input.

Thanks for your reply. I appreciate all comments. Just a side note. I am 66 yo and have been working on vehicles for over 50 years. I understand the mechanics of how stuff works. This car i have had since new and its got 290k on it. It has only been to a mechanic to get timing chain done. I dont...

There is a check valve in the diesels. Wish i could buy one. Need one in bayside brisbane.

Yep thats all well and good. BUT the manual shows a check valve for the Petrol engine. It does not show for the diesel hence i dont think it has a check valve.

Where is the non return valve?

Somthing more to think about. I have done all the brake work on this car since i bought new in 07. When bleeding the brakes yesterday i had to have the engine running to get any fluid out. Now i dont remember having to do this before.

I did test (a) above and its fine. I then went looking for Lack of Vacuum even though the finger over end of hose showed it was good. I made a T and put in vac line to booster. The vac gauge shows 28 in/hg which is perfect by the manual. Not bad for a 290k vac pump. Repeated operations of the...

Discount the pedal going to floor. Had a leak. Just took it for a drive. You get one application of the brakes and then goes hard. Same as before. I think losing vacuum. Will check all the pipes.

Thank you all for your replys. I bought a secondhand booster which had a master cylinder on it. I then changed it over noting that my brake fluid was half gone. Found it inside the booster. so replaced both booster and master with the secondhand one. Bled all the brakes until no air. Well its no...

Nah Vacuum hose has good connection.. Thanks

I also hear a hiiss under dash when i let the pedal off.

There is not a lot on the forum regarding Brake Boosters as i suppose they rarely play up. The symptons i have are i apply the brakes and work ok. I might get a second pump but after that the pedal goes hard and and l am looking for an exit strategy with both feet on the pedal. Cars done 290k...

I unfortunately took the idler off and dropped it. The picture (if it loads) shows the parts that i have. I have put it on how i think it goes but it hits the bracket and cant turn. Am i missing any parts?? If so what? And if these are all the parts in what order do they go together.

I have an 07 D40 YD25 and have had a EGR blanking plate for years. No issues. A friend has same car but with a replacement engine. Blanking Plate on it causing engine light. I presume the engine has an EGR sensor where mine does not. Is the only solution to drill a hole in the plate and let some...

I have just replaced the pulley as it sounded like a jamaican steel band. New one from Bursons was $98 and it has a plastic dust cover on the front.

I have a sort of confession to make. After letting the D40 sit there while i stewed on replacing the chain i decided to start it and decide on its future. I started it and it listened to the sounds of a jamaican steel band coming for the engine. I removed the engine cover and to my surprise the...

Following on from my last post on this issue I have left the car sit while i think about the dilemma. My thoughts are that I will get YD25 to fit the dual row chains and sort of future proof the car. I like it but this chain issue drives me nuts. I just am loathe to drive it and dont want to...