Knocking noise - still no closer

Technical questions and answers about the Mazda Bongo

Moderators: Doone, westonwarrior

User avatar
Northern Bongolow
Supreme Being
Posts: 7713
Joined: Mon Mar 15, 2010 11:33 pm
Location: AKA Vanessa

Re: Knocking noise - still no closer

Post by Northern Bongolow » Tue Dec 27, 2016 7:55 pm

yes i agree but that was just a way of saying drive the bongo while someone puts there hand on the top of the front struts, then you may be able to locate the knock. you could achieve the same by removing the bonnet and get someone to sit on the front while driving it, it may at least give you which side the knock is and help pin point it. :wink:
Bob
Supreme Being
Posts: 15263
Joined: Wed Oct 17, 2007 12:54 pm
Location: North Somerset

Re: Knocking noise - still no closer

Post by Bob » Tue Dec 27, 2016 10:13 pm

Ahh, the old days.

We once came back from Bristol with me sat backwards on the wing of my pal's 103E Ford Pop, arm round headlight and holding a jam jar filled with petrol syphoned from the tank.

Held higher than carb and syphon started we refilled when the jar ran out.

Bet they don't allow 'Get you home' jobbies like that now. :lol:

And it was jolly cold. 8)
User avatar
mikeonb4c
Supreme Being
Posts: 22875
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: Knocking noise - still no closer

Post by mikeonb4c » Tue Dec 27, 2016 11:49 pm

Bob wrote:Ahh, the old days.

We once came back from Bristol with me sat backwards on the wing of my pal's 103E Ford Pop, arm round headlight and holding a jam jar filled with petrol syphoned from the tank.

Held higher than carb and syphon started we refilled when the jar ran out.

Bet they don't allow 'Get you home' jobbies like that now. :lol:

And it was jolly cold. 8)
Pictures please Bob cos i can't :lol: :lol: :lol:
Bob
Supreme Being
Posts: 15263
Joined: Wed Oct 17, 2007 12:54 pm
Location: North Somerset

Re: Knocking noise - still no closer

Post by Bob » Wed Dec 28, 2016 9:54 am

It was a Box Brownie in those days and reserved for family holidays. :lol:
User avatar
Northern Bongolow
Supreme Being
Posts: 7713
Joined: Mon Mar 15, 2010 11:33 pm
Location: AKA Vanessa

Re: Knocking noise - still no closer

Post by Northern Bongolow » Wed Dec 28, 2016 6:53 pm

it was ok cos the pop would outrun the bobby on his bike so you wouldnt get caught eh. :lol: :wink:
Bob
Supreme Being
Posts: 15263
Joined: Wed Oct 17, 2007 12:54 pm
Location: North Somerset

Re: Knocking noise - still no closer

Post by Bob » Wed Dec 28, 2016 8:59 pm

Very near the truth. :oops:
User avatar
mikeonb4c
Supreme Being
Posts: 22875
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: Knocking noise - still no closer

Post by mikeonb4c » Thu Dec 29, 2016 1:17 am

Northern Bongolow wrote:it was ok cos the pop would outrun the bobby on his bike so you wouldnt get caught eh. :lol: :wink:
Ah yes, the old Velocette LE200 Noddy Bike. No there's an ancient memory Sigh!

Image
User avatar
sotal
Supreme Being
Posts: 1098
Joined: Mon Jun 01, 2015 8:52 pm

Re: Knocking noise - still no closer

Post by sotal » Sat Dec 31, 2016 2:24 am

Northern Bongolow wrote:yes i agree but that was just a way of saying drive the bongo while someone puts there hand on the top of the front struts, then you may be able to locate the knock. you could achieve the same by removing the bonnet and get someone to sit on the front while driving it, it may at least give you which side the knock is and help pin point it. :wink:
Had my wife put her hand on top of the dash the other day but she couldn't feel the knocking through that.

I honestly don't think it is the strut bearing though. From listening I think it is wishbone related or possibly steering rack.

I noticed it can be quite prolonged if the steering stays in the same place and it's a bit bumpy. It seems to make the noise with the steering in roughly the same place each time. Just a bit off centre to the right, but will only make the noise if the suspension is being compressed. Bumpy road gives multiple prolonged knocks a dip tends to give one knock. Once the steering is straightened or if you are going left it won't make the knock at all. Almost 100% sure it is nearside (I know noise can travel etc.) But it is quite loud and passengers all agree it sounds like it is that side. Also the abnormal tyre wear on the Westside backs this up.

Very frustrating! It sounds bad enough now to make anyone with any mechanical sympathy cringe!
User avatar
cmm303
Supreme Being
Posts: 1665
Joined: Mon Jan 07, 2013 8:10 pm
Location: Chippenham, Wiltshire

Re: Knocking noise - still no closer

Post by cmm303 » Sat Dec 31, 2016 12:23 pm

Northern Bongolow wrote:yes i agree but that was just a way of saying drive the bongo while someone puts there hand on the top of the front struts, then you may be able to locate the knock. you could achieve the same by removing the bonnet and get someone to sit on the front while driving it, it may at least give you which side the knock is and help pin point it. :wink:
:idea: Make yourself a super long stethoscope!
Said slightly tongue in cheek - we'd need photos of hose pipes hanging out of Sotal's ears whilst driving :lol:
Chris with BertieB
'96 White unconverted AFT 2.5L Diesel 4WD
User avatar
Northern Bongolow
Supreme Being
Posts: 7713
Joined: Mon Mar 15, 2010 11:33 pm
Location: AKA Vanessa

Re: Knocking noise - still no closer

Post by Northern Bongolow » Sat Dec 31, 2016 6:48 pm

if its suspension wishbone on the nearside you could poss feel it through your feet while someone else drives if your sat in the passenger side, if its steering rack it should be felt at the wheel or on the column. it does now sound like the rack may be worn on one well used or impact damaged tooth.

http://lushprojects.com/bongopartsmk2/c ... mgno=.html.

could even be a failing bottom universal joint on the steering shaft. try wobbling the steering wheel with the engine not running and feeling the shaft/uj

http://lushprojects.com/bongopartsmk2/c ... mgno=.html
User avatar
mikeonb4c
Supreme Being
Posts: 22875
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: Knocking noise - still no closer

Post by mikeonb4c » Sat Dec 31, 2016 11:13 pm

With it being as pronounced a noise as it now appears to be, I would hope an experienced hand like Ian Taylor would now be able to track down the cause. Here's hoping. [-o<
User avatar
sotal
Supreme Being
Posts: 1098
Joined: Mon Jun 01, 2015 8:52 pm

Re: Knocking noise - still no closer

Post by sotal » Tue Apr 18, 2017 2:40 pm

In the interest of completeness, if anyone stumbles across this post in the future...

It does appear to have been the ball joint on the wishbone. Wishbone replaced and the noise appears to have gone.
Bongolia
Supreme Being
Posts: 1524
Joined: Fri Apr 01, 2016 2:17 am
Location: Folkestone

Re: Knocking noise - still no closer

Post by Bongolia » Tue Apr 18, 2017 2:55 pm

sotal wrote:In the interest of completeness, if anyone stumbles across this post in the future...

It does appear to have been the ball joint on the wishbone. Wishbone replaced and the noise appears to have gone.
GREAT NEWS!!
I would have that would be a pretty straightforward job then?
8) :lol:
User avatar
Northern Bongolow
Supreme Being
Posts: 7713
Joined: Mon Mar 15, 2010 11:33 pm
Location: AKA Vanessa

Re: Knocking noise - still no closer

Post by Northern Bongolow » Wed Apr 19, 2017 12:42 am

yeh 20 mins a side, - - - - - - - - usually. :lol: :lol: :lol:
Post Reply

Return to “Techie Stuff”