Hello folks,
My bongo seems to have picked up an intermittent speed problem. On a couple of drives lately it's really struggled to get above 65 ... I put my foot right down to the floor on the accelerator and the revs won't go above 2500... it feels very sluggish and unresponsive compared to normal.
I'm inclined to think it's something to do with the Turbo... Anybody know anything i can do to narrow it down?
Thanks!
Bongo too slow
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- g8dhe
- Supreme Being
- Posts: 10179
- Joined: Sun Apr 13, 2008 10:06 pm
- Location: Worthing, West Sussex.
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Re: Bongo too slow
Its not unknown for the intake hose to come loose I believe ..... look under the seats and it might be obvious.
Re: Bongo too slow
Thanks...
So I've had a good look under both seats and there don't seem to be any obvious lose air hoses. Definitely not the big ones and not the little one that connects from the air intake to the top of the fuel pump and was the issue in another similar thread...
I ran the bongo in park and checked around with my hand couldn't feel any air around the engine under seats bit escaping...
But on the exhaust pipe there is a pretty big leak - about halfway down the bongo - can feel the air coming out heavily without even revving ... with rev there's loads escaping... could this be it? Gonna try and tighten up the nuts on this pipe joint.
Where exactly is the Turbo Turbine on the exhaust pipe?
And what is that thing that i've pointed to with a blue arrow?
Thanks!
https://www.dropbox.com/s/mjki8uhsd5p4z ... y.jpg?dl=0
So I've had a good look under both seats and there don't seem to be any obvious lose air hoses. Definitely not the big ones and not the little one that connects from the air intake to the top of the fuel pump and was the issue in another similar thread...
I ran the bongo in park and checked around with my hand couldn't feel any air around the engine under seats bit escaping...
But on the exhaust pipe there is a pretty big leak - about halfway down the bongo - can feel the air coming out heavily without even revving ... with rev there's loads escaping... could this be it? Gonna try and tighten up the nuts on this pipe joint.
Where exactly is the Turbo Turbine on the exhaust pipe?
And what is that thing that i've pointed to with a blue arrow?
Thanks!
https://www.dropbox.com/s/mjki8uhsd5p4z ... y.jpg?dl=0
- g8dhe
- Supreme Being
- Posts: 10179
- Joined: Sun Apr 13, 2008 10:06 pm
- Location: Worthing, West Sussex.
- Contact:
Re: Bongo too slow
Ah looks like you have one of the Northern Japan models with the cold start modifications, that valve in the exhaust closes OFF the exhaust to assist in rapid warming of the engine in a -40°C climate! They are known to rust up and seize in the closed position in the UK because they are so exposed to the road salt, they are normally disconnected by removing the vacuum pipe to them so they don't operate, it might be this which is the cause of your problems ?
Re: Bongo too slow
Ah interesting... good to know... does the fact that the exhaust is getting past that valve though mean that that can't be the problem? There's plenty of exhaust still blowing out the back.
Re: Bongo too slow
The first thing I would do ( if the valve ok) is clean /replace all the filters .
Re: Bongo too slow
Thanks... the Fuel Filter seems to have done the trick!