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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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740 poor running and stallingViews : 21799 Replies : 119Users Viewing This Thread : |
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Nov 5th, 2021, 00:31 | #61 | |
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I don’t think they could be cleaned as they’ve already had the methylated spirit running through them to no avail? To remind you: 1989 740 B200E K-Jet |
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Nov 5th, 2021, 07:20 | #62 | |
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What evidence are they basing their claim on that the injectors are faulty?
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Nov 5th, 2021, 08:55 | #63 | |
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£500 to swap the injectors is a total con !!
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Nov 5th, 2021, 09:42 | #64 |
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Very few companies will touch K-Jet injectors Mark.
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Nov 5th, 2021, 09:51 | #65 |
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You could email this company to ask https://www.injectortune.co.uk/Contact.html
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Nov 5th, 2021, 10:18 | #66 | |
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"Can you clean my injectors? We can clean most petrol injectors, replacing used components with new where we are able to." https://www.injectortune.co.uk/Faq.html In their FAQ, "most" is underlined. Looking round the rest of their online shop, everything is EFi so i'd suggest they almost certainly don't clean K-Jet injectors. Presumably they have no way of opening the K-Jet injectors while ultrasonically cleaning them. I know these people don't clean K-Jet injectors for that reason : https://www.emeraldm3d.com/emerald-s...ditioning.html Opening pressure for the K-Jet injectors is 38-52psi which could be tricky (for many reasons) to create in a flow testing/cleaning bench as used for testing EFi injectors. http://b2resource.com/PDFs/interjectKJetronic.pdf More information there ^^^^^
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Nov 5th, 2021, 10:42 | #67 |
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So if the garage is quoting a price for four new injectors from Volvo £500 is about right ?
Not saying thats what needs doing for one minute but I can see where they get the price from
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Nov 5th, 2021, 11:58 | #68 | |
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I'm still not convinced it is the injectors, before the OP disappeared to uni again i was going to suggest adding an egg cup full of synthetic ATF to the tank which would help clean the injectors and revive rubber components in the fuel distributor while lubing the fuel distributor as well. It would also counteract any negative effects from the meths used for removing condensation from the tank. The other thing is, there's a strong chance the car actually just needs to be driven a fair bit. My gut feeling is that the problem is mainly lack of use.
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Nov 5th, 2021, 12:03 | #69 | |
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I found an article from a guy with an old Merc that had the same injectors and he cleaned them up himself and fitted new seals ( like a big rubber bung ) and said it made a massive difference. They look pretty basic so I suspect you are right about that not being the main issue
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Nov 5th, 2021, 12:24 | #70 | |
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With that in mind there's less to go wrong on a K-Jet injector as it's much lower stressed in terms of pressure etc.
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740, 940, b200e, stalling, throttle lag |
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