Offroad-Express

Just changed the fuel filter in my safari (diesel) and it is cuting out and runing like a bag of shit Suspect there is an air lock in it. I have pumped the bluck buton ontop of the filter but still no go Can eneyone tell me how to blead the system?

Cheers.

these take a lot of priming, is easier to fill filter with fuel before installing.
would take feed hose from filter to motor off, and re prime until
fuel is pumping out. this way you can be sure all is primed correct,
small amounts of air will be taken out when motor is running.
some of the newer vehicles will self prime hope this helps

QUADRACER wrote:these take a lot of priming, is easier to fill filter with fuel before installing.
would take feed hose from filter to motor off, and re prime until
fuel is pumping out. this way you can be sure all is primed correct,
small amounts of air will be taken out when motor is running.
some of the newer vehicles will self prime hope this helps

As quadracer said ... fill filter with fuel before installing.

This is the bit some people miss ...
would take feed hose from filter to motor off, and re prime until
fuel is pumping out. this way you can be sure all is primed correct,

Otherwise you have to re-bleed the injectors as well

As quadracer said ... fill filter with fuel before installing.
This is the bit some people miss ...


This is the bit i missed
Think i will have to bleed the injectors. How do i do this? take them out and turn it over untill i have fuel coming out?

If you did not full the filter first and just pumped the primer without disconecting the fuel line between the filter and the injector pump it will not remove all of the air as there is no where for the air to go ...

If you have primed it with the hose off it sounds like you have air in the injector lines.

To bleed them loosen the injector tubes where they connect to the injectors Then get some one to wind the motor over and as fuel shows at each injector tighten it up.

Be careful of the belts and things while doing this, also it will probably start after you have done the first 2 or 3 this is fine just leave it running and tightened of the last ones when the fuel shows.

Filling the filter makes it easier to prime, but, its also a very easy way to introduce dirt etc into the system. IF you are to pre fill, fill the filter through the outer, small ring of holes. This means that all fuel will be filtered.

A lot of newer vehicles require the key to be turned on as they have a fuel cut out solinoid at tank (safety reasons)

I changed my fuel filter last service. Bleed it up, ran it, and it was fine. Turned it off, did rest of service and tried to restart it again. No go. Man, what an issue it was. My advice, when you do get it running, let it idle for 5 mins.

Goy all sorted now, but man what a hassel
Had to bleed it at the injectors, Heaps of air in it.
At least i will know what to do next time, thanks for the help

I just open the bleed valve on the filter, stick the compressor in the fuel filler with rag to seal it, and blow the fuel through.
Haven't had to fill the filter first, and haven't had probs with air in the lines

Don't seal it too tight or blow too much air into it. Diesel is a compression ignition fuel and the fuel vapour will go boom if your not careful. Did it to me and another mechanic once. Scared the living crap out of us.

You guys do it the hard way, if you didn't fill the filter up, get some one to sit in the cab and turn the engine over on the key while you pump the primer on fuel filter.

Keep turning it over at about 30 secs at a time untill it starts, once started hold the rev's up a bit and continue working the primer, it will run rough for a small while as the air works its way through, and then will settle down.

Other wise loosen the bleed screw on top on fuel line on the injector pump if yours has one, and pump the primer on the filter untill you get fuel at the bleed screw. Mine doesn't have a bleed screw, it has an electrical fitting there instead.