fuel injectors

[Christo Atanasov]

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Hi all,
few hours ago I decide to take off cylinder head of my Audi for rebuild.
1-st It's realy hard to pull out injectors - is it ok?
2) What's the difference betwen 026 133 551 and 035 133 551 F (http://elcats.ru/audivw/vag5.asp?subm=%CF%EE%E8%F1%EA&btsnr=018-00&cid=61)
3) is it possible to unbolt Intake manifold without cleaning space with dismounting airfilter box first?

regards,
Christo
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