new member with questions

Technical questions and answers about the Mazda Bongo

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and
Bongonaut
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Joined: Fri Jan 08, 2021 10:54 am

Re: new member

Post by and » Fri Jan 15, 2021 4:28 pm

I am gong to remove the cylinder head, diesel repair shop say cant be the pump as it is a rotary type and do not create this type of problem they either work or don't basically .So i am going down the road of a mechanical problem ie valve / cracked head but dubious as compression test was good but who knows what i will find pot of gold may be :wink:
willow2u
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Re: new member

Post by willow2u » Sat Jan 16, 2021 2:00 am

Easy tiger you’re leaping straight in to the deep end if it’s cheap parts wise to try another pump to be sure of problem why not try it I have a pump that was perfectly ok for the cost of postage and a beer I would happily mail it to you. Also is there any difference compression wise between hot and cold
willow2u
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Re: new member

Post by willow2u » Sat Jan 16, 2021 2:08 am

Also these pumps are responsible for the injection timing so they are reasonably complex to the point where they could be party to the problem unlike the common rail rotary pumps which purely just supply pressure
and
Bongonaut
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Re: new member

Post by and » Sat Jan 16, 2021 9:43 am

That sounds a good idea can you find out how much to post to WV4 6SU and how much on top and we can sort it out :)
Only checked compression cold
I have started to take it apart and i think someone has been ! tatting ! for want of a better word bolts not tight new jubilee clips and hoses easy to remove mainly things you would expect to be tight or seized if you know what i mean cheers.
willow2u
Bongolier
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Re: new member

Post by willow2u » Sat Jan 16, 2021 2:01 pm

I reckon £30 should cover it I could send it of Monday let me know cheers
and
Bongonaut
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Re: new member

Post by and » Sat Jan 16, 2021 3:15 pm

thats good how can i pay cheers steve
willow2u
Bongolier
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Joined: Tue Jun 30, 2020 2:35 pm

Re: new member

Post by willow2u » Sat Jan 16, 2021 4:28 pm

I’ll pm you my bank details and you can tell me your address 👍
and
Bongonaut
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Re: new member

Post by and » Sat Jan 16, 2021 4:49 pm

That ok but call or text me on ********** if that is easier cheers

EDIT Phone number removed to lower the risk of you being spammed. :) Its better to share it by private message.
and
Bongonaut
Posts: 54
Joined: Fri Jan 08, 2021 10:54 am

Re: new member

Post by and » Fri Jan 22, 2021 3:15 pm

Thanks i did wonder about posting my number
Anyways i have removed the c/head and took to be tested and it is ready to collect on monday with no faults found :)
Put oil into the cylinders still there after 3 days no loss. :)
Pumps and injectors away to be tested will not know till next week i hope they find a problem because if not i will be stumped [-o<
After 50 odd years . Car / hgv / bus mechanic
and
Bongonaut
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Re: new member

Post by and » Tue Feb 02, 2021 6:34 am

Well engine back together but still not running rite i think i have a timing issue as when i rev there is a rattle at top end but not on tick over its mainly from the front cylinder no1 definitely worse starts first time. All injectors and pump tested ok
So do you think it could be timing one tooth out or valve adjustment .
willow2u
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Re: new member

Post by willow2u » Tue Feb 02, 2021 9:18 am

Did it have a new belt on it when you got it
and
Bongonaut
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Re: new member

Post by and » Tue Feb 02, 2021 9:59 am

i have fitted a new belt / head skimmed tested / good compression / pump /injectors refurbished ect this why i suspect either valve clearance / or timing is out as it does sound like a detonation problem like a skeleton rattling in a tin can so to speak :). The higher the revs the louder it gets.
willow2u
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Re: new member

Post by willow2u » Tue Feb 02, 2021 7:25 pm

I just wondered about the belt like if it was a new one on there someone might have done something wrong
willow2u
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Re: new member

Post by willow2u » Tue Feb 02, 2021 7:33 pm

Would be worth checking valve clearances again now you’ve run it up don’t know if there’s a hot gap setting or if it’s just from cold. From memory doing old ford engines those lock nut adjusters are a pain would have thought they would be hydraulic very primitive
and
Bongonaut
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Re: new member

Post by and » Tue Feb 02, 2021 7:45 pm

I agree going to check valve clearances but go to check what the clearances are when weather picks up and re check timing but i am lead to believe you have use a dial gauge to do it properly cheers