Car Fix DIY Videos

James ward Rust Repair. says:

To make taking these injectors out a doddle, I disconnect 'em, then rotate them around in their holes with a bar & hammer – that sideways twist breaks the bond between the injector & any crud. You can then pop them out easy with a slide hammer hooked in under the lip. Far easier than all the usual faffing about trying to just pull them. Twist them first. Usually they then just pull out by hand – a doddle. Slide hammer if they don't – still a doddle. People pull like mad on them using fancy gear, often failing to get anywhere if they are a bit stuck, when a sideways twist works a thousand times better/faster/easier – Physics. Bar onto the base of the feed pipe-attachment bit where it's flat, give it a good whack, the injector rotates & Fanny is yer Aunt. She's free/. The same goes for most injectors – pulling is a pita – give 'em a twist first. Nobody does, dunno why.

To test electrically, just check resistance across the pins – 0.5 to 0.6 ohms & they're ok. Anything different, chances are they're borked electrically. I then strip the injector tips & clean them/the needles in an ultrasonic cleaner with whatever "aggressive stuff" in it I can find around the workshop. The ultrasonic does a great job.

Soaking the crap out of the heads injector bores with throttle cleaner (not brake cleaner) & then blowing the muck back up & out with an airline/blowgun works good too.

I keep the copper washers in place with a smear of vaseline so they don't fall off when the injector is going back in & I fit the hold-downs onto the injectors as well – a shim of paper stops those falling off – trying to fit them once the injector is back down the hole is a pita – fit them first, lower the "unit" down ready to bolt.

Generally, if you did have a blocked injector, the worlds supply of black muck will get shot out the exhaust shortly after you fire it back up – fear not… that happens.. Another "Handy hint" is when you have cleaned the injector tips, get a spray can of throttle body cleaner, bang the nozzle into the arze of the injector tip & give it a good squirt – you should see the injector spray pattern emerge from the tip – if any bit of the pattern is missing, it needs more cleaning – after you do a few, you can see when the pattern is right – it will be all the ickle holes banging out a mist of throttle body cleaner. 🙂 No fancy rigs required.

As an aside, lol – long comment – if you do get the "Worlds supply of black crap!" coming out the exhaust when you fire it back up, do a manual DPF clean as well – chances are the injectors being on a go-slow have peppered the dpf with soot & junk. It's not that they weren't injecting, it's that they were dribbling & not misting – which creates a rubbish combustion & therefore loads of soot & muck. Which stuffs your dpf full rapido – so clean it. 🙂