Can anyone tell me if there is (a) a fuel filter ( not the main fuel filter )and (b) a non return valve, on a 92 2CT diesel fuel pump.
If so where are they located.

- (#6242) stephen judge, 29 Nov 02

The only non return valves would be in the priming pump on the filter head.
There is a little filter between the low pressure and hugh pressure sections of the pump. It's situated inside the cutoff solenoid. Unscrew the solenoid, then the plunger and a little cylindrical filter pull out. It's not unknown for it to collect fibres sucked out of the main filter...

- (#6243) david miller, 29 Nov 02

David,
Is the non-return valve on the filter head servicable ? If so can you tell me how.
Could you also give me an idiots guide to where the small filter is, between the low and high pressure sides of the pump is.
I'm still trying to track down the problem with my "sluggish when cold"
It's sounds like a similar problem to Grahams "Low Idle" problem 5/11/02 BOK ( I've mailed him for his solution ) I think its unlikely its the small filter but I should check it out.
I'm thinking that it might possibly be fuel leaking back from the pump as the vehicle sits for a long period of time. Thereby making it hard to start.( like a petrol with no spark - gring - grind - grind )
I have found that the bottom of the main fuel filter is a little wet ( where the bottom cap screws in ) but it's not a drip - drip -drip situation.
Any suggestions would be appreciated.
Thanks for all your previous ideas!
- (#6244) stephen judge, 29 Nov 02

Ah-ha. an air leak is more likely to be the issue... Recheck that the fuel filter is on securely, that the float assy is on at the base OK, and the tap closed tight.

The little filter? at the reat of the pump, the injector pipes screw in to a cast iron bit. At the top of it, there's a brass fitting with a hex on it, and a wire attached by a little nut. That's the solenoid. Wire off, big spanner on the valve body, off it comes...

- (#6245) david miller, 30 Nov 02

Actually, if there's a chance you've damaged the float thingy at the bottom of the filter, there's a smaller spin-on filter you could try- no hole in the base...
toyota ref. 23302-56031/ Isuzu 13240009. I buy it as Mahle KC5.

- (#6246) david miller, 30 Nov 02

David,
Many thanks for your info. I'll check the filters and advise of the results.

I'm sure many others,like me, suspect you have secret access to that Nirvana - "Spacecruisers Are Us" website in the sky.

Many thanks

- (#6247) stephen Judge, 30 Nov 02

As David Miller suggested I revisited the main fuel filter. The fuel pump filter I thought was a bit to advanced for me to tackle unless absolutely necessary.
Removed the main filter, cleaned the Floaty thing, replaced the bottom O ring ( with the one supplied with the replacement filter that I thought it did'nt need ) , cleaned the top gasket faces, reassembled it all and screwed all the mating faces and drain plug, against each other pretty tight.
I've started it maybe 8-10 times with about an hour between each start and its on the button ! Never failed to start immediately ! I'm keeping my fingers crossed that its fixed !
I'm amased because there was not what I would of considered a leak from the filter - just a very slight damp -wetness.
I can only assume that the suction the fuel pump pulls is sufficient to draw in air from even the smallest source and once there it gathers in the pump to make further starting difficult until all air is purged and in addition the replacement filter was clean enough for the first 6 weeks to enable the pump to pull fuel through the filter rather than air from a potential leak source.
Either way Its certainly fixed -temporary or perminant. I'll keep the Board posted. Lets see how it develops.
Many thanks again to you David.


- (#6303) stephen judge, 2 Dec 02

Hit the nail on the head, Stephen... Nothing affects a diesel like a lack of fuel for whatever reason.

- (#6304) david miller, 3 Dec 02

Got a F reg Spacecruiser Model F,petrol, she was running fine but broke down tree times over last few weeks. Problem is when starting with warm engine, she runs for a bout five minutes then dies. No fuel getting thru. She is fine starting from cold. Had AA out last time who eventually started her by hand pumping petrol thru to carb, he said to replace fuel pump and filters but I am having trouble finding pump locally (Derbyshire). Also she seems a bit underpowered at times, fuel starvation maybe any help appreciated

- (#7022) Kev S, 5 Feb 03

Kev,
Have look at the filter first, before the pump. There is a glass view point on the float chamber so you can see if there is fuel in the carb. After running and as it cools down the vacuum in the carb sucks fuel into the float chamber, so cold starts are not a problem. Fire it up and watch the the level in the window.
You should be able to get a pump from a local factors.
- (#7023) clive, 5 Feb 03

Thanks for help. When I start her from warm there is petrol visible in window, she runs for a few minutes then dies. I ckecked the fuel pipe backwards from the carb to the pump, it was bone dry. I turned her over but couldnt get any thing thru the pump, however soon as she was cold she started up. It took a few pulls to fire up its as thou petrol is running back thru to tank when hot. could it be a vacuum in tank, I had this before on another car it was a blocked breather pipe, or is it a seal or something in the pump itself. As regards motor factors, local place has directed me to a main dealer so should be sorted at a price ( I live out in sticks so not much choice).

- (#7107) Kev S, 6 Feb 03

Kev

Whereabouts in Derbyshire are you? Give Matti a ring on 01332 272292. He's at Stenson Fields near Derby. Specialises in Jap imports but I saw a Spacecruiser outside when I was down there last week. He'll fix you up with a 2nd hand pump for sure.

I'd still check the fuel filter first though.

- (#7108) Ian Dunse, 7 Feb 03

Replaced filter, still no joy. Is there a second filter in tank? had this in a fiat i think some time ago. thanks for derby number he is near enough for me cheers

- (#7109) Kev S, 8 Feb 03

just to update, thanks for help, sorted it, had all pipes off blew air thru, put them back on one at a time pump is ok She is staring fine and running dandy must have been a blockage. Ill keep you posted thanks again brill site

- (#7110) Kev S, 8 Feb 03

Glad you got sorted. The cheap fixes are the most satisfying ones!

- (#7111) Ian Dunse, 10 Feb 03