loss of power when warm

fordavefreda · Post by **fordavefreda** » Sun Jan 07, 2007 12:49 pm

anyone any ideas?

freda runs fine when cold, but after driving a few miles loses power and gets to a stage where there are no revs at all, looked at other posts on here but i haven't come to conclusion seems like a fuel problem,

help would be greatly appreciated

thanks dave

Bingabanga · Post by **Bingabanga** » Sun Jan 07, 2007 1:35 pm

Just a thought. When you go off and it gets warm then appears to have fuel starvation (yes?) try taking the fuel cap off and see if it improves.
Sometimes fuel breather pipe becomes blocked. Keep us informed .
This is just the sort of techie question from which we all learn. (at your expense!!)

fordavefreda · Post by **fordavefreda** » Sun Jan 07, 2007 1:58 pm

thanks for quick response, just been out to try that, there was a suck of air when i took off the fuel cap and i thought bingo! but when i fired it up the problem still occurs

any more ideas anyone?

regards stressed stuck in all day freda owner

57Chevy · Post by **57Chevy** » Sun Jan 07, 2007 2:49 pm

Hi fordavefreda

Is the loss of power accompanied by any smoke from the exhaust? I have had a similar problem on ford diesel van.It had a small fracture on the fuel inlet to the pump.When the van warmed up the expansion caused the crack to open up and it started to suck air into the fuel pump which caused loss of power.

fordavefreda · Post by **fordavefreda** » Sun Jan 07, 2007 9:53 pm

bump

getting desperate

advice would be great

kind regards dave

mikeonb4c · Post by **mikeonb4c** » Sun Jan 07, 2007 11:09 pm

I'm sure there's been some stuff on all this before. Have a good Search of the Forum - unless anyone else can remember. Seem to recall some issues with turbochargers but my memory is way too poor to be sure so take that with a pinch of salt.

Vanmanerik · Post by **Vanmanerik** » Sun Jan 07, 2007 11:12 pm

For a diesel engine to run it basically requires three main things, fuel, compression and air. So if your air filter is not clogged, you have compression on all four cylinders, fuel is being delivered to the injectors (slacken one of the nuts slightly to see?) then I can only suggest you check your exhaust system for a blockage, I know this sounds silly but we are looking for the unknown here. Even backing into a hedge can cause the exhaust to be clogged with earth etc. , or even snow in winter. The motor will run but eventually stop, leave it a while and it will run then eventually stop again - been there done that one, felt a fool but never forgot it.

fordavefreda · Post by **fordavefreda** » Mon Jan 08, 2007 9:47 pm

thanks mikeonb4c and vanmanerik your help is appreciated, i ve gone down all avenues regarding the advice you have given but to no avail, i do think it might be the fuel filter it's the last thing on my check list, i ve ordered one to get it out of the equation, i don't understand why it only loses power when warm though

regards dave

mikeonb4c · Post by **mikeonb4c** » Mon Jan 08, 2007 9:54 pm

Sounds like an expansion when warm leads to leak type thing not to get too technical

fordavefreda · Post by **fordavefreda** » Mon Jan 08, 2007 10:04 pm

yeah i ve seen the post that 57chevy put have had a good look but can't see any cracks or holes, loose pipes etc...

Vanmanerik · Post by **Vanmanerik** » Tue Jan 09, 2007 1:00 am

Do a check on the whole length of the air inlet pipe from the air cleaner to the turbo to make sure that when the engine is hot a part of the pipe is not collapsing and forming an air restriction.

fordavefreda · Post by **fordavefreda** » Tue Jan 09, 2007 6:00 pm

thanks again vanmanerik

, it's begining to confuse me now this one, the problem doesn't occur until i try and rev the engine to full revs then it misfires and smoke comes out the exhaust then it gradually revs less and less each time i rev the engine until it won't rev at all then it sometimes stalls. i then leave it a good few hours it will be normal again, can drive it carefully without over revving and all seems fine, but then if i put my foot down it gradually stops revving again weird.

i think i might check the injectors maybe they will be blocked?

more ideas anyone?

mick · Post by **mick** » Tue Jan 09, 2007 6:55 pm

Well, I had a very similar problem with my motorbike (identical symptoms), and this is a veeeeeerrrrry long shot but....

it could be electrical ? The fault on the motorbike was due to a faulty voltage regulator. Basically it was overcharging the battery, and this caused ignition problems. Simply turning on all the lights, and the heated grips burnt off excess voltage, and improved the running. I replaced the voltage regulator, and all was well.

I realise that diesels and petrol are different beasts, but you've tried all the obvious ? Is the battery overheating (does it feel hot to touch ?)

dandywarhol · Post by **dandywarhol** » Tue Jan 09, 2007 7:18 pm

You're right Mick......................it is a very long shot - so long you've missed the runway

Battery charging will have no effect on a diesel's running

Bumbly1 · Post by **Bumbly1** » Tue Jan 09, 2007 9:34 pm

I had a similar problem and it was a lose wire on the fuel cut out solenoid which is on the pump.

loss of power when warm

loss of power when warm

Lack of power

Lack of power.