Anyone...please!

tristanjustin · Post by **tristanjustin** » Fri Jan 26, 2007 2:27 pm

Im having a fuel consumption problem-i have read somewhere in the previous discussions on how to adjust the fuel pump( as this might help in lowering the fuel consumption ),honestly im no expert in the engine department-im having a hard time locating the nuts to be adjusted.Anyone pls-if you can help me locate it ( visually) it would be of great help.Thank you.

Tur80 · Post by **Tur80** » Fri Jan 26, 2007 2:38 pm

It's on the back end of the pump. I you look at the pic its the long threaded part on the left though it doesn't have it's locknut on in the pic. Click on the pic to enlarge it

Slacken the locknut and then turn the threaded part, a 1/4 of a turn is more than sufficient and you should get an idea of whats going on as the idle speed will rise with extra fuel (rich)when turned one direction and slow down with less fuel(lean) when turned in the opposite direction. Just a little at a time and observe the results of a tank or 2 of fuel and driveability
Don't forget to make sure your air filter is clean/ vehicle serviced

Veg_Ian · Post by **Veg_Ian** » Fri Jan 26, 2007 2:40 pm

Whoa hang on a minute before you go wading in to the pump with spanners and screwdriver. A diesel pump is a finely tuned piece of hardware that should be configured on specialist kit. It's not like fiddling with screws on a pterol engined carburettor.

Have you explored every other possibility for your problem? First up what kind of fuel consumption are you getting? Any smoke? Any fuel leaks? Has it been serviced lately with new fuel and air filters? Does it run ok? Messing with the pump is the last resort and shouldn't be touched unless you really know what you are doing.

Tur80 · Post by **Tur80** » Fri Jan 26, 2007 2:50 pm

I'd hardly call the zexel/bosch pump a finely tuned piece of hardware. Admitedly complex on the inside but providing the fueling is only adjusted in small increments there shouldn't be any problems or need to frighten people away from them. IMO
Just remember to jot down what you've adjusted and how much.... you can always change it back!!!!!

dandywarhol · Post by **dandywarhol** » Fri Jan 26, 2007 3:08 pm

I'm with Veg on this one tur80 - you're advice is grand for someone with a good knowledge of the effects of the fiddling but if someone is "no expert in the engine dept." or wouldn't know a camshaft from a calm day then it's best left to an expert.................

antique · Post by **antique** » Fri Jan 26, 2007 4:47 pm

hi i must admit we have adjusted pumps for emissions for mot, knocked the pump back then re adjust , not sure it will improve mpg try the other things first

Veg_Ian · Post by **Veg_Ian** » Fri Jan 26, 2007 10:41 pm

Quite. Pump settings just don't go off the boil. Look elsewhere before touching the pump. Give us your symptoms and let's see if we can help diagnose the problem for you. As I asked earlier, what mpg are you getting?

tristanjustin · Post by **tristanjustin** » Sat Jan 27, 2007 11:13 am

thank you for the replies...i had my bongo serviced(change oil, oil filter, air filter, fuel filter) just last month hoping that this would help ease my fuel consumption-because evesince i got this it has been consuming in the area of 22mpg to 26mpg daily driving. no fuel leaks, and no previous service on this part...maybe you are right vegian its for the expert to twitch and adjust my fuel pump;But thank you very much Tur80 for the extra effort(its highly appreciated), i was just hoping that this is not really that complicated and for me to save some money, and also because i was able to clean the strainer under the banjo bolt by just following the instructions posted. and it turned out there was a little bit of dirt that i was able to wash out. well thats just me.after reading dandy's opinion im a bit hesitant now...i might destroy something in the long run...(more costly repairs).

antique · Post by **antique** » Sat Jan 27, 2007 11:29 am

hi think about it, the van is 10years old turbo diesal ,automatic , 26 mpg i dont think thats bad ? in hindsight manual might have bean a better choice, any way the sun will be out soon doom and gloom will be forgotten ?

tristanjustin · Post by **tristanjustin** » Sat Jan 27, 2007 11:40 am

I was just hoping that i could still shave off some more consumption after hearing that others can do 30mpg to 32mpg. I dont have a problem with bringing it to the expert mechanics but if maybe, just maybe i can do it on my own without really damaging something big, the money i save i can still use it in other areas(if you know what i mean).well thats just me...hoping

trevd01 · Post by **trevd01** » Sat Jan 27, 2007 11:51 am

30+mpg is kind of a holy grail that many of us never reach...

Some, on individual journeys, have reported over 30mpg, but I think you will find it is not a realistic average for an auto diesel Bongo.

My advice to a prospective auto diesel Bongo owner, based on my own experience and everything I have read on this forum, would be 'expect 25-30mpg'.

Harry · Post by **Harry** » Sat Jan 27, 2007 12:32 pm

I've experimented with driving styles in an effort to reduce fuel consumption on my 4WD Automatic Freda bongolow.

Urban Driving and around hilly back lanes loaded. Around 25mpg

Long distance loaded or unloaded but keepin speed to around 60 - 65mph
Juast over 30mpg (up to 34)

Driving at 70mph on motorways around 26 - 27mpg

Clogging it at 80+mph on long trips through Europe - Low 20s mpg.

Avoiding sharp accelleration certainly helps too but isn't as much fun as giving those 'sporty' jobs the shock of their lives.

Food for thought

Harry

Vanmanerik · Post by **Vanmanerik** » Sat Jan 27, 2007 12:41 pm

Put a magnet on your fuel line, it can't do any harm.

See Topic http://www.igmaynard.co.uk/bongo/forum/ ... ght=magnet

Morticus · Post by **Morticus** » Sat Jan 27, 2007 1:16 pm

I average over 30mpg in motorway driving (65/75mph). Recently I ran out of diesel and filled up with 1 gallon. I ran dry again after less than 19 miles of local driving! Doh!

A big difference between long distance running and stop/start cold running at this time of year.

The good part was that a few turns of the motor got the system primed up again.

Morticus

mikeonb4c · Post by **mikeonb4c** » Sat Jan 27, 2007 4:54 pm

Have to agree with you Morticus - gloomy mpg on my v short winter runs - 20pmg I fear. But once on the open road and taking it easy, 30+. But do I really want to live without my Bongo = No. I'm thinking o cycling a work some days so I 'increase' teh mpg. That will be a positive things as I'll get fit with no gym fees and can let loose more when I actually want to drive her.

Anyone...please!

Anyone...please!

pump

mpg

Fuel Consumption