broken manifold bolt,

Technical questions and answers about the Mazda Bongo

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wilmo80

broken manifold bolt,

Post by wilmo80 » Thu Sep 09, 2010 7:42 pm

hi just had this really loud whistleing noise coming from the manifold,found out there is a bolt snapped off and i was wondering if this can be done at home or if a garage done it how much would this cost,may thanks. :)
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haydn callow
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Re: broken manifold bolt,

Post by haydn callow » Thu Sep 09, 2010 8:14 pm

If it's the one nearest the front of the engine ( No 1 stud ) it is a simple job to extract it and if that cannot be acheived then drill and helicoil...Any decent garage should be able to do it and it can be done without removing anything. Just swing the alternator out of the way.
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mister munkey
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Re: broken manifold bolt,

Post by mister munkey » Thu Sep 09, 2010 8:17 pm

More than likely will have warped the manifold though so that will need skimming flat, or a suitable replacement sourced & make sure you get a new gasket too.

Not really a diy job but any local engineering shop should be able to do that for less than an hours labour time.
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flipflop

Re: broken manifold bolt,

Post by flipflop » Thu Sep 09, 2010 8:53 pm

just had mine done, no1 had gone and on closer inspection others has gone/softened to :?

gasket was replaced to

pm me if you want to know price :)
Nippon Tuck
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Re: broken manifold bolt,

Post by Nippon Tuck » Fri Sep 10, 2010 12:41 pm

I would wholeheartedly advise getting the job done properly by having the manifold skimmed. I had the same problem last year and only had the offending stud redrilled and replaced. 6 months later the noise returned. The recent solution was to have all the bolts replaced and a skimmed unit. It is about a150-170 pounds but worth it in the long run.
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