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Thread: What engine is this and where is the EGR Valve? (with pic)

  
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    What engine is this and where is the EGR Valve? (with pic)

    Hi Guys,

    Having a bit of trouble finding the EGR valve on my '99 Astra Estate 1.7td. Could someone please tell me what model engine I have and also where the valve is positioned on this engine?

    A removal guide would be nice as well

    Thanks in Advance

    http://img.photobucket.com/albums/v1...9122010009.jpg

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    gm diesel engine

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    As stated it is indeed a GM 8v, the EGR valve is the flying saucer shape thing top right at 1 O'clock position just above where the intercooler pipe bends. It has one small vac pipe coming out of which runs to the control solenoid it's held in place by a collar secured with a cap head bolt. They just pull off once the collar is removed they can be very very tight try twisting first.

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    Quote Originally Posted by Techno View Post
    As stated it is indeed a GM 8v, the EGR valve is the flying saucer shape thing top right at 1 O'clock position just above where the intercooler pipe bends. It has one small vac pipe coming out of which runs to the control solenoid it's held in place by a collar secured with a cap head bolt. They just pull off once the collar is removed they can be very very tight try twisting first.

    So am I right in saying once I have removed the alan key bolt colar, beneath the head of the valve, its just a case of twisting and pulling the 'flying saucer' out of its housing? Do I need to be cautious of any springs etc coming out when removing?

    Cheers, Mike

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    Yep just pull there is nothing to worry about its a sealed unit there should be two slots each side with the plunger in the middle.

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    Ah i was wondering why mine wouldnt come off! haha cheers guys

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    Quote Originally Posted by Techno View Post
    Yep just pull there is nothing to worry about its a sealed unit there should be two slots each side with the plunger in the middle.

    Is it then a case of sitting the removed part in petrol etc to clean it or is it the area below that gets cleaned?

    Cheers

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    Just poke out and scrape off as much of the carbon as you can then use carb cleaner. The plunger should move if not push it until it does word of warning the vac chamber could be full of oil so put something over the vac hose nipple to catch it just in case. If it is full of oil it's likely the intercooler is as well which will also need cleaning the main reason for the oil being there is failed turbo oil seals.

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    WAHEEEYYYY! Job done, thanks guys . Removed the EGR as advised and low and behold....full of s**t! Its had a damn good clean and adjoining pipes and intercooler pipes have had a good spray with carb cleaner.

    So far, so good. Not running lumpy any more, EML has stayed off and seems alot more responsive on the throttle! All in all a top result!

    Thanks again guys

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