transit wont rev

[seph234]

hello i have a transit 1998 s reg its got the banana engine fitted.
the problems i have is that it takes a while to start and when it starts it is ticking over lumpy and it will only rev a silly amount to about just over normal tick over, i had a broken plastic elow that went into the egr valve i fixed this but would this pull any air into the system any help please. joe[/img]

[AndyG]

Sounds like either your throttle cable has come loose or even worse, your timing belt has jumped

When was the timing belt changed When was the engine last serviced (oil, fuel air filters etc...)

[seph234]

hello andyg thanks for the reply
I will explain a bit more i bought the van from a company i work alongside, it has been used as a site van crawling round at 15mph for a couple of years it has been serviced and the cambelt is ok, ive checked the throttle cable and that is ok. today i cracked the injectors off and got some air out and now it revs but seems like it is a bit choked up and there is quite a bit of white/grey smoke coming out of the back i dont know if it just needs a good run but the only problem ive got is it has no mot or tax so how can i give it a good run before an mot or is there anything i should be checking to cure the smoke cheers. joe

[seph234]

sorry forgot to add it is now starting on the button. joe

[Guy88]

when you take it for the MOT give it a good thrashing

Book it into a test station a few miles away

[seph234]

hello and an update i took it out tonight on a private road of course and gave it a thrashing i had red embers coming out of the exhaust and a very large smoke screen behind me (looked like the van was on fire) and it didint seem to get any better
im now wondering if the head gasket is suspect what does anyone else reckon thanks. joe

[Guy88]

Sonund like it needs a decoke

[seph234]

hello guy88 thanks for the replies,i know this might be a silly question but how do i do a decoke cheers. joe

[Guy88]

take the inlet off and clean all the crap out. if you want to do a full decoke then take the head off and do that too

[seph234]

hello guy88 thanks again i have took the inlet manifold off today and it had a black oily residue inside so i have cleaned this out and il put it back on at the weekend and see if this makes a difference i also noticed today that it had a spark arrestor near the back of the exhaust so i have took this off as it migt of been clogged il let you know how i get on cheers. joe

[MrMPuk]

i also noticed today that it had a spark arrestor near the back of the exhaust so i have took this off as it migt of been clogged il let you know how i get on cheers. joe

Does it have a Chalwin valve as well?

[seph234]

i also noticed today that it had a spark arrestor near the back of the exhaust so i have took this off as it migt of been clogged il let you know how i get on cheers. joe

Does it have a Chalwin valve as well?

hello what is a chalwin valve

joe

[MrMPuk]

i also noticed today that it had a spark arrestor near the back of the exhaust so i have took this off as it migt of been clogged il let you know how i get on cheers. joe

Does it have a Chalwin valve as well?

hello what is a chalwin valve

joe

It's a valve that goes in the intake and are very often fitted in conjunction with a spark arrester, also it's my bad but it's spelt Chalwyn.

[seph234]

thanks for the reply im not sure i didnt see any extra valves
its got the air filter that runs upto the egr then that bolts onto the first part of the banana manifold that then bolts upto the main manifold on the head. joe

[gardener68]

i also noticed today that it had a spark arrestor near the back of the exhaust so i have took this off as it migt of been clogged il let you know how i get on cheers. joe

Does it have a Chalwin valve as well?

hello what is a chalwin valve

joe

It's a valve that goes in the intake and are very often fitted in conjunction with a spark arrester, also it's my bad but it's spelt Chalwyn.

one of these,
http://www.chalwyn.co.uk/EN/diesel_fuel_shut_down.html

when i worked in fawley refinery some of the vehicles had these and spark arrestors.

also we left a vehicle running all day because the starter was dodgy. on the drive home the smoke cloud out the back was awsome.
your exhaust may be sooted up after two years of pottering around.