Timing advance valve

[BIGSEAN]

As the title says, has anybody had any experience of changing/cleaning this item, are replacements easy to come by ect?
Any advice would be gratefully received.

terrano 2 2.7tdi

 

[BIGSEAN]

Or does anybody have a tdi injection pump going for low money?

 

[makeitfit]

Interesting :sly what's occuring ? :augie

 

[BIGSEAN]

Blue smoke, lack of power, unable to rev over 2500 rpm and ecutalk telling me my timing advance valve is staying at 91.6% continuously(should drop to 60/70% at tickover when warm, mine never does.)

 

[BIGSEAN]

Given the number of replies am I to assume that nobody can help regarding this problem ?

 

[Timbo_1975]

Only just seen this post!

Get a genuine bosch valve (assume you have a bosch pump?) Clean area VERY throughly and carefully unscrew. Spring and piston behind it. Make sure the piston isnt stuck in the bore. Either the coil is open circuit or the piston is stuck. Check coil with DVM. I would flush out the valve with brake cleaner before refitting.

Your symptoms are of a stuck valve- and you shoulld be missing the diesel knock when cold i.e. the timing is stuck retarded, lots of blue smoke etc.

 

[BIGSEAN]

Wow thank you for the reply,could you possibly give me a pointer as to the location of the valve on the pump, can this be done without removal of the thing(removal scares me )

 

[Timbo_1975]

Bottom of the pump, two flat head or posi screws. Black rubber cover over connections.

 

[BIGSEAN]

Brilliant, just found the relevant entry in the manual, hopefully will be able to test the electrical side of things tonight
The big thing was finding out where it was located physically.
Thank you very much Timbo, will post what i find later on .

 

[BIGSEAN]

well, electricals all tested out correctly, located the offending valve and unfortunately it looks like a pump removal job
Tonight i will be removing as much as i can from above the pump just to confirm thisbut it`s looking like a biggy to me
Will update as i progress.

 

[BIGSEAN]

Ok quick update, managed to remove the advance valve with the pump in situ, quite suprised to find another mini filter in there as well. This was caked in a brown substance which came of almost in a little sheet. My hope were raised by this and after a good clean i reassembled.
The car started, all readings were spot on for about three minutes then bang, back to previous readings :doh.
Now then, I think whatever the gunge was is residing actually in the pump/fuel lines, I am getting a replacment pump on thursday so i can either use it`s advance valve or if needed the whole pump.

 

[leafy1]

Does the fuel inlet to your injector pump have a mini filter fitted ...............
I know I say this a lot on here but this mini filter is a 5 minute job to check,a lot of people don't even know if they have one or not(just check anyway)If this filter is blocked the Terrano will hardly run ,throw out all sorts of smoke and make you think the pump is capput.
I have just been on another forum with a fella having all sorts of problems with his toyota surf,he had changed all the filters ,had the injectors cleaned and couldn't get to the bottom of the rough running.
All I said was check to see if there was a mini -filter ,and there was one fitted which was almost blocked with crap.He cleaned it and vehicle is running perfectly again.

 

[BIGSEAN]

Aye cheers m8,i do have thebanjo bolt mini filterand it's spotless, have also done all the usual fixesI.E
New fuel lines filter, maf ect. It has been a real quest to get to the position iam in at the moment