problem 75
Submitted: Sunday, Feb 24, 2008 at 18:51
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brentos
hi everybody
Q: i have a 75 series ute 4.2 diesel i want to know if anybody has had problems with the primer pump for the fuel filter,can they kick the bucket and suck air through the pump.
cause when i go to prime it wont draw fuel through the filter so the ute wont run and when i do get it going it runs good for a few hundred kms then coffs and splats and dies,i have checked all the fuel lines and i cant see any leaks or splits for it to be drawing air. i just cant seem to solve the problem
any advice will be taken on board
thanks
Reply By: Member - Hughesy (NSW) - Sunday, Feb 24, 2008 at 21:29
Sunday, Feb 24, 2008 at 21:29
Brentos, I've had 2 x 75's and they both used to take about 3-4 minutes (have to swap hands a couple of times!!) of pumping to get the fuel thru. Both had over 200k on them so maybe the
hand pump was a bit tied.
Keep pumping for about 5 pumps after it goes firm too and this "seems" to get any air out of the system because
mine have always started first crank and run smoothly after a filter change.
A couple of tips.
1. Yes you can crank the motor to get the fuel up but remember the injector pump uses the diesel as a lubricant so I'd advise against that method unless you were in a hurry.
2. Change the primary smaller/cheaper ($7ish) filter every 5k and the main filter every 10-15K. Just remember to change the rubber seal in the top of the housing of the primary filter. Its best to remove the whole filer housing to do this unless you have a rubber neck.
3. A
check to see if you
hand pump is working is to take the inlet hose of the secondary filter and put you finger over it while pumping...it obvioulsy should suck hard against you finger.
4. As others have said make sure all your hose clamps are tight (replace the Toyota ones with worm drive clamps) and ensure the fuel hose hasn't gone hard/brittle.
Good luck mate the 75's are a great truck.
AnswerID:
289204
Follow Up By: brentos - Sunday, Feb 24, 2008 at 21:54
Sunday, Feb 24, 2008 at 21:54
hi hughesy
thanks for the tips i have taken everybodies advise on board
and i will start with the easiest thing first just hope i can sort it out
thanks to everyone for the help
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Reply By: Member - Davoe (Yalgoo) - Sunday, Feb 24, 2008 at 22:26
Sunday, Feb 24, 2008 at 22:26
Youve got an air leak somwhere. contrary to what was stated just coz air can get in doesnt mean diesal can get out.
I had the problem with a lister genny and It had a glass bowl which enabled me to see the air graduaklly acumulating in the filter which eventually stopped the motor but it toomk a while.
I fixed it by tightening every unuin between pipes that carried diesal i could find
- this is where i would start if i was you
AnswerID:
289222
Follow Up By: Member - Davidp P (VIC) - Monday, Feb 25, 2008 at 20:45
Monday, Feb 25, 2008 at 20:45
is the fuel pump in the tank?, if not the low pressure supply side hose may be de-laminating and blocking the flow
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