oily spots on the back of bongo

[tomheaney99]

does anyone else get oily spots over the back of the bongo? Mines been doing this for some time now? It also gets really soooty on the back tooo. My exuast is a twin exhaust which is angles slightly up away from the ground.

any ideas?


tom

[teenmal]

does anyone else get oily spots over the back of the bongo? Mines been doing this for some time now? It also gets really soooty on the back tooo. My exuast is a twin exhaust which is angles slightly up away from the ground.

any ideas?


tom

Hi tom,

Do you use veg oil?

It could also mean that your inlet manifold is needing a clean out.

Mal..

[tomheaney99]

i used to use veg oil about 3 months ago and that's when it 1st started however stopped using it and i've done a fair few trips (scotland etc) since then and it still does it? the soooting up is thick all over the back too still ...?

[tomheaney99]

question -

where is the inlet manifold?? ha

tom

[teenmal]

Hi tom,

The inlet manifold http://www.lushprojects.com/bongopartsm ... mgno=.html

This is on the off-side of the engine(drivers side).To clean it out properly it would need to be removed .

Mal..

[tomheaney99]

thanks mal for quick response will give it a go

[francophile1947]

Your exhaust won't help, as it's directing the exhaust gases into the turbulence you get around the back of the van, instead of away from it - downward pointing would be better. This turbulence sucks all the muck onto the van Just look at the back after driving on a wet road - they don't fit rear wipers for nothing

[gmaczbongo]

Are you parked against a wall etc when you start it up.
Oily spots could just be the condensation when you start the van.

[tomheaney99]

nah i even washed it and a trip to nrth yorkshire - spots appeared again. got them alot when i used to run it on veg oil but stopped it because of the dirty back end (hehe) however still gets oily deposits :/

[gmaczbongo]

I meant to say, change the fuel filter.
Cheapest option, ebay and others have cheap filters, cheap by price and not by quality.

[tomheaney99]

filter was changed only 4 mnths ago?

[mister munkey]

What about the air filter?

Could be running rich, tends to soot up a bit.

[tomheaney99]

ive put a K&N air filter in just recently?

[gmaczbongo]

Filter 4 months. Veggie 3 months.
"It all stated when veggie was used".

[Tripewriter]

It could be residue in the exhaust if exhaust is usually smoke free!