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Thread: 1988 RR Classic not running on petrol.

  1. #11
    Join Date
    May 2019
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    Melbourne
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    Quote Originally Posted by Richard Kaye View Post
    I think over the weekend I will have a go at resoldering the injector circuit of the board, cant make it worse than it is. I am also looking around for a replacement ECU with the part number PRC7440 if anyone has a working one they want to sell.

    Hi Richard, where did you end up with this mission? Cheers, James

  2. #12
    Join Date
    May 2011
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    Sunbury
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    I ended up getting another ECU for $110. The car is now running on petrol although it runs better on LPG than petrol. Has a weird surging around 2500-3000rpm which I think is due to the Air Flow Meter. Have set the %CO to 0.5% and found that it seems to like the timing on around 16 degrees BTDC, when on 6 degrees it doesn't run very well. I don't know how far I can take the timing as I cant turn the distributor any further as its hitting the block at 16 degrees.

  3. #13
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    Quote Originally Posted by Richard Kaye View Post
    I ended up getting another ECU for $110. The car is now running on petrol although it runs better on LPG than petrol. Has a weird surging around 2500-3000rpm which I think is due to the Air Flow Meter. Have set the %CO to 0.5% and found that it seems to like the timing on around 16 degrees BTDC, when on 6 degrees it doesn't run very well. I don't know how far I can take the timing as I cant turn the distributor any further as its hitting the block at 16 degrees.
    Hi Richard, I've just gone over you thread again. No mention of the fuel regulator. Have you had a look at this? Cheers James

  4. #14
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    Checked the fuel pressure regulator before determining that the ECU was the problem. There were no issues with it.

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