940 td wont start

[argosy960]

volvo 940 1993. TD intercooler, Wont start, Car has been lying for months, But its a good engine, No issues with it, I tested heater plugs there ok,, I changed fuel filter,,i,m gravity feeding it from a can,,, still not starting,,,Not even a puff of smoke,Its like its getting no fuel what so ever,, I checked solinoid on fuel injector pump,, its clicking,, it has power, i tested it,,,
So why will it not start? new battery,, its turning over fast,,, and for long period,
I,m afraid of ruining my starter at this stage,, ?
HELP!!!!!!!!!

[jor]

Whenever mine has failed to start it's been plugs, so not an experience I've had.
You could loosen the connectors to the injectors in turn to make sure that fuel is getting there. Also that the little lines connecting the injectors have not perished.

jor

[argosy960]

Originally Posted by jor

Whenever mine has failed to start it's been plugs, so not an experience I've had.
You could loosen the connectors to the injectors in turn to make sure that fuel is getting there. Also that the little lines connecting the injectors have not perished.

jor

I'll check lines but i,m sure there good, , Could solenoid on injector be problem, getting power but stuck? when i undo injector pipes at injector there is a tiny spit of diesel, very small,
is using easy start good idea? total mystery, i know these engines, so easy to bleed, yet its not taking any fuel even when gravity fed,

is it easy take solenoid out?????

[jor]

If you are only getting a tiny amount of fuel after loosening the union that would seem to indicate that not enough is getting through. When I replaced the injectors I thought that the injector/pipe unions were tight, only to find a considerable leak.. Might be worthwhile removing the injectors and taking them to a shop to have them checked.
For a complete discussion of the solenoid issue have a look at the d24 list on tufts (tufts elists) last month.
Presumably you filled the filter before replacing.

jor

[argosy960]

Originally Posted by jor

If you are only getting a tiny amount of fuel after loosening the union that would seem to indicate that not enough is getting through. When I replaced the injectors I thought that the injector/pipe unions were tight, only to find a considerable leak.. Might be worthwhile removing the injectors and taking them to a shop to have them checked.
For a complete discussion of the solenoid issue have a look at the d24 list on tufts (tufts elists) last month.
Presumably you filled the filter before replacing.

jor

Got it to start,,,Now another problem,, it will not rev,, its holding 1500 rpm and thats it, i cannot rev it more,,Cable is ok
Plus it is very smokey
When it started there was a strong smell of vegetabel oil,So i assume someone had vegetable oil in it,
When i rev it there it nothing,,I stood on rev,nothing,,got out of car,1 min later it raced reved hard,,all on it own,,,or a late reaction to me reving it,
Whats issue here? Injectors blocked,,or coated with carbon,,? Seems like it to me,,Plus when engine raced i could not turn it off,,I turned key off it kept racing, i pulled fuel supply from it,still kept running ,i had to loosen off injector pipes to get it to die,,
What the hell? i started it again few hours later,, turn off and on with key,,but i didnt rev it,,,and its still smoking and holding 1500 rpm and will not rev,,
timing seems ok,,, as it starts first turn off key,,,,,,,,,,,

[jor]

Draining what's in it and refilling with diesel might be worthwhile, if you add 250mls of non synthetic ATF that will help clean the injectors.

jor

[huron]

The sumps not overfilled is it??

[zetor160]

Put a new fuel filter on.. and she'll be right as rain..

Sounds to me like fuel starvation.

Fuel filters can let you down with little warning sometimes, esp.if vehicle has been standing. Poss. filter rot as well..sucking in on itself and blocking the flow of fuel.

Hope you get it sorted soon

Regards

[zetor160]

Sorry..just seen you've changed said item..apologies.

Rotted/perished/blocked pipes that:


a. restrict the flow of Diesel

b. That allow air to be sucked in to system (trust new filter is properly screwed down with no air leaks?)

c. Try running the car with fuel cap off, to vent the tank

From your post..it sounds as though you're not getting enough fuel thru to the injectors, coupled with air being sucked in to the system.

Don't think it can be anything too complicated on these motors.

Regards

[argosy960]

Originally Posted by jor

Draining what's in it and refilling with diesel might be worthwhile, if you add 250mls of non synthetic ATF that will help clean the injectors.

jor

Running off a can of diesel, So its only getting diesel,

Originally Posted by huron

The sumps not overfilled is it??

nope. Not over filled,

Originally Posted by zetor160

Sorry..just seen you've changed said item..apologies.

Rotted/perished/blocked pipes that:


a. restrict the flow of Diesel

b. That allow air to be sucked in to system (trust new filter is properly screwed down with no air leaks?)

c. Try running the car with fuel cap off, to vent the tank

From your post..it sounds as though you're not getting enough fuel thru to the injectors, coupled with air being sucked in to the system.

Don't think it can be anything too complicated on these motors.

Regards

Its running off of a can of diesel, Could return pipe be blocked, as its running off of can, but returning to tank,
Anyway i dont think filter is blocked, as its running strong, and hold 1500 constant, and zero reply from rev,,, NOTHING,
plus when i run off key >> READ THIS,, Once i turn off key revs increase straight away, they race up to 2300 rpm,, engine wont die,,if i turn key back on it goes back down to 1500 rpm,,turn off 2300 rpm,,turn on 1500 rpm,,i can do this all day,,,, WEIRD OR WHAT?
i have no answer