low down rattle

[long]

I get a rattel in my TD 2.7 that sounds like pinking in a petrol motor and it also seams to be running on 3 cyls when it dose this only happins at low RPM though any ideas out there im thinking it mite be the filter in the top of the injector pump getting blocked leaning out the diesel folw ????

[mudhaw]

Does it blow any smoke when it happens, if so what colour. Does it happen when its hot or cold or all the time. Have you just filled up with fuel ?. Dose it use any water. May seem like simple and or dumb questions but they can all help to solve the problem. Alot of problems can be solved with these simple questions. Also make sure your front pully isnt lose, came across that problem last week made a strange rattle and seemed gutlles.

[long]

No to all the above including the pully and it still has usal amount of power

[mudhaw]

Try checking the valve clerances and may be a compression test.

[Heath]

Is an exhaust valve sticking?

[long]

I have been thinking about this while at work today im woundering if the injection pump is out of timeing if it was would it cause this to happin ????

[Dak]

Could also be a sticky injector.

[long]

it seams to happin after driveing for a while more than short trips it sorta sounds like a cam berring that has gone in an ally head and yes it dose seam to be comeing from the front of the motor.
The noise sounds like a very loud clacking but ilke i say it dosnt happin all the time.

[long]

Ive put new injecters into my terrano it had 2 that were leaking quite bad the motor seams to be running a lot smother as well.
BUT I STILL HAVE THE RATTLE ive been told that the EC valve mite be shot has anyone had to replace theres if so where is it found ?

[mudhaw]

Usualy found on the inlet manifold, the best way to fix it is to block it of. Replace the gasket with a plate of panel steel and dont put the hole in the middle, and block off the vacume hose. Makes it run better and stops the soot build up in the inlet manifold.

[long]

Blocked off the ER valve on the weekend what a DIFFERANCE it has made to it and no more low down rattle wahoooooooooooooo

[tweake]

check the butterfly on the inlet pipes. if it operates while motor is going (with bit of throttle) then you will need to disable it.

[mudhaw]

Thats good news
EGR systems on deisles seem to cause more harm than good

[long]

Yeh not only blocked off the ER valve but also blocked off vacum line as well so nothing works there now and i have more power as well so it was worth doing