Very very slow moving off

Technical questions and answers about the Mazda Bongo

Moderators: Doone, westonwarrior

Post Reply
User avatar
umbongocat
Supreme Being
Posts: 2251
Joined: Mon Apr 26, 2010 5:02 pm
Location: london (north)

Very very slow moving off

Post by umbongocat » Mon Feb 13, 2012 6:58 pm

Recently I've found that when I get in the bongo to set off in the morning, it is very very very slow moving off and feels like there is no power. Almsot feels like I've still got the handbrake on (which I haven't :) ) It only lasts for about 5seconds and then it's back to it's normal self. Any ideas of what this could be? Thought it could be the cold weather but apparently it's done it when it wasn't below freezing :(
I love cheese!
User avatar
chipvan
Supreme Being
Posts: 1872
Joined: Sat Apr 11, 2009 5:31 pm
Location: dorset

Re: Very very slow moving off

Post by chipvan » Mon Feb 13, 2012 8:25 pm

Crud in tank picking up bits ?
User avatar
mikeonb4c
Supreme Being
Posts: 22877
Joined: Sun Nov 05, 2006 10:49 pm
Location: Living with Mango Bongo in the North West but with a tendency to roam
Contact:

Re: Very very slow moving off

Post by mikeonb4c » Mon Feb 13, 2012 10:48 pm

Is it a diesel? Is it fine if start it and let it warm up on tickover for a minute or two?
User avatar
blobber
Supreme Being
Posts: 1452
Joined: Tue May 08, 2007 9:30 pm
Location: NORTHWICH

Re: Very very slow moving off

Post by blobber » Mon Feb 13, 2012 11:29 pm

Agree with the above, but still could be the handbrake shoes binding,try leaving it in 'P' with the handbrake off if possible.
Alan & Dot

Yes sir, I can Bongo !!

I now walk with an angel by my side.
User avatar
Northern Bongolow
Supreme Being
Posts: 7722
Joined: Mon Mar 15, 2010 11:33 pm
Location: AKA Vanessa

Re: Very very slow moving off

Post by Northern Bongolow » Tue Feb 14, 2012 12:54 am

its a diesel isnt it cat? what year is it.
think yours is quite a late one with one of them fancy fuel pumps and turbo on it. if it is let julian have a look.
User avatar
umbongocat
Supreme Being
Posts: 2251
Joined: Mon Apr 26, 2010 5:02 pm
Location: london (north)

Re: Very very slow moving off

Post by umbongocat » Tue Feb 14, 2012 1:58 pm

Thanks for the replies :) Yes Ady its a newer diesel but it's not one with the fancy newer pumps thankfully :P

I've not used it in the past few days so not sure if it's still happening, if it continues I guess it's best to get Julian to take a look at it :)
I love cheese!
User avatar
Northern Bongolow
Supreme Being
Posts: 7722
Joined: Mon Mar 15, 2010 11:33 pm
Location: AKA Vanessa

Re: Very very slow moving off

Post by Northern Bongolow » Wed Feb 15, 2012 7:14 am

can you describe better whats happening cat, and exactly when.
does it start up ok but wont pull away. or does it struggle to start.
after the initial pause is it ok for the rest of the day when starting/pulling away.
User avatar
Northern Bongolow
Supreme Being
Posts: 7722
Joined: Mon Mar 15, 2010 11:33 pm
Location: AKA Vanessa

Re: Very very slow moving off

Post by Northern Bongolow » Thu Feb 16, 2012 7:04 am

been thinking about your problem a bit more cat,if its just the first start,when warming up, if your starter battery is a bit down(knackered) then the starting and the glow plugs staying on a while may cause the plugs not to heat up enough to warm the engine, then as the revs rise the current pics up and warms them more, then off you go.
suggest you get the battery checked/measured when starting, and the alternator.
User avatar
dandywarhol
Supreme Being
Posts: 5446
Joined: Mon Dec 19, 2005 10:18 pm
Location: Edinburgh

Re: Very very slow moving off

Post by dandywarhol » Thu Feb 16, 2012 12:44 pm

Northern Bongolow wrote:been thinking about your problem a bit more cat,if its just the first start,when warming up, if your starter battery is a bit down(knackered) then the starting and the glow plugs staying on a while may cause the plugs not to heat up enough to warm the engine, then as the revs rise the current pics up and warms them more, then off you go.
suggest you get the battery checked/measured when starting, and the alternator.
But the glowplug relay cuts off whenever any turbo boost is present. :?
Whale oil beef hooked
Renault Lunar Telstar
Yamaha TD1C 250, Merc SLK200, KTM Duke 690
User avatar
Northern Bongolow
Supreme Being
Posts: 7722
Joined: Mon Mar 15, 2010 11:33 pm
Location: AKA Vanessa

Re: Very very slow moving off

Post by Northern Bongolow » Thu Feb 16, 2012 4:51 pm

yes, i understand that, but i was thinking of the transition phase of the on off the revs/turbo causing the hesitation etc.
if its ticking over ok when first started , the plugs are lit, than as the revs increase the turbo knocks off the plugs-----no acceleration until the engine warms itself up and off it goes.------------------------ maybe :lol: .
then bring in the poss low voltage of a maybe low battery.
cannot think of anything else other than slightly duff plugs. #-o #-o :wink:

chell says its a pump sucking air at rest problem, but i like to think cheap first cat as i like you.
Last edited by Northern Bongolow on Thu Feb 16, 2012 4:56 pm, edited 1 time in total.
321Away
Tribal Elder
Posts: 783
Joined: Mon Oct 26, 2009 1:45 pm
Location: Berkshire
Contact:

Re: Very very slow moving off

Post by 321Away » Thu Feb 16, 2012 4:55 pm

is she still running her car with diesel/veg oil mix? i know that can cause problems in low temps due to the veg oil thickening

Julian
User avatar
umbongocat
Supreme Being
Posts: 2251
Joined: Mon Apr 26, 2010 5:02 pm
Location: london (north)

Re: Very very slow moving off

Post by umbongocat » Thu Feb 16, 2012 5:10 pm

321Away wrote:is she still running her car with diesel/veg oil mix? i know that can cause problems in low temps due to the veg oil thickening

Julian
Hi Julian, no we've not put oil in since the summer. However, it's had less use of late with only the occasional trip. Think the OH is going to contact you today and see if we should bring it up on Saturday :)
I love cheese!
User avatar
The Great Pretender
Supreme Being
Posts: 2671
Joined: Thu Oct 19, 2006 10:10 pm
Location: Wigan

Re: Very very slow moving off

Post by The Great Pretender » Fri Feb 17, 2012 12:28 am

Northern Bongolow wrote:
chell says its a pump sucking air at rest problem, but i like to think cheap first cat as i like you.

I think Chell maybe onto something, a small amount of air being drawn in from a connection downstream of the pump slowly percolating its way up to the pump overnight could cause the problem........... =D> =D> =D>
To infinity and beyond
User avatar
Northern Bongolow
Supreme Being
Posts: 7722
Joined: Mon Mar 15, 2010 11:33 pm
Location: AKA Vanessa

Re: Very very slow moving off

Post by Northern Bongolow » Fri Feb 17, 2012 6:31 am

dont say that for gawd's sake, we've already had one arguement about it, all i need now is for her to be right #-o :wink: .
8) 8)
User avatar
dandywarhol
Supreme Being
Posts: 5446
Joined: Mon Dec 19, 2005 10:18 pm
Location: Edinburgh

Re: Very very slow moving off

Post by dandywarhol » Fri Feb 17, 2012 10:21 am

Auto box filter getting choked - oil cold and thick?
Whale oil beef hooked
Renault Lunar Telstar
Yamaha TD1C 250, Merc SLK200, KTM Duke 690
Post Reply

Return to “Techie Stuff”