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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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T4, hideous misfire.Views : 343 Replies : 1Users Viewing This Thread : |
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May 3rd, 2020, 09:35 | #1 |
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T4, hideous misfire.
Hi all, I've had the odd bit of stuttering the last few days, figured it's probably in need of new plugs so ordered a set, they're not here yet, but it's got worse, as the video below shows.
I've had the plugs out before starting it this morning and number 1 was really sooty, the other three all fine, made no difference, then I tried with number 1 lead off, obviously still the same apart from it doesn't clear when you raise the revs, then I tried disconnecting the coil pack on number 4 that also feeds 1, pretty much no change, obviously rougher initially as there's now 2 cylinders missing, but it's the same running as towards the end of the video before I raise the revs again, to me it sounds like it goes on three and then down to two, hence the worse running nearer the end of the video. EDIT: then I swapped the coil packs around and the problem has moved to 2 and 3 as I hoped it would, so it's a dead coil pack. https://youtu.be/W_zrdioDM2w
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02 V40 T4 S, "Sargent silver" she's back!
Last edited by clarkey1984; May 3rd, 2020 at 10:30. |
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May 4th, 2020, 19:59 | #2 |
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At least its an easy fix then.
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