Injector pump replace or repair

Technical questions and answers about the Mazda Bongo

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Simon Jones
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Re: Injector pump replace or repair

Post by Simon Jones » Thu Mar 07, 2013 2:20 pm

Strange, but true if you look at the wealth of info available online. Petroleum based products are well known to cause rubber & neoprene to deteriorate. That's probably why it is recommended to replace all rubber fuel hoses every 4 years. Of course, everyone ignores that advice, but that is what you'll find in the service schedule:

http://www.igmaynard.co.uk/bongo/member ... hedule.pdf

Will it bugger up a newly fitted injector seal? Probably not, but you could dip O-ring in diesel and it will be just as easily to fit and you know it will not be doing additional harm.
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The Great Pretender
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Re: Injector pump replace or repair

Post by The Great Pretender » Fri Mar 08, 2013 1:55 am

Simon Jones wrote:Strange, but true if you look at the wealth of info available online. Petroleum based products are well known to cause rubber & neoprene to deteriorate. That's probably why it is recommended to replace all rubber fuel hoses every 4 years. Of course, everyone ignores that advice, but that is what you'll find in the service schedule:

http://www.igmaynard.co.uk/bongo/member ... hedule.pdf

Will it bugger up a newly fitted injector seal? Probably not, but you could dip O-ring in diesel and it will be just as easily to fit and you know it will not be doing additional harm.
I'm sorry Simon, Vaseline (soft paraffin) and diesel are both Petroleum based products and Viton copes well with them, and Tom Slick on your third link says

"just to add to my above post, i usually use whatever is being used in the system to lube the o-ring.
on turbine engines we use petrolatum (vaselene) almost exclusively on all o-rings, but most are made out of very chemical resistant materials, not your run-of-the-mill cheapo orings."

So, have a discussion with the wife, girlfriend or boyfriend about latex, is diesel best.............. :lol:


I prefer technical information regarding suitability and making my own informed decisions.
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mikeonb4c
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Re: Injector pump replace or repair

Post by mikeonb4c » Fri Mar 08, 2013 8:52 am

Vaseline is great stuff. Smeared it In rust sweating metal - seems to stop it dead. Sorry, totally off thread :lol:
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