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200 Series General Forum for the Volvo 240 and 260 cars |
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No CompressionViews : 1938 Replies : 22Users Viewing This Thread : |
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Oct 19th, 2023, 22:40 | #1 |
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No Compression
Car broke down last week, engine just died. Breakdown mechanic suggested timing belt but garage has checked and it's ok, timing ok too. That's all they've managed to do so far as they're very busy, but in the meantime I wondered if any of you knowledgeable people might have any ideas. The starter turns the engine but there's no compression, cylinder head complete overhaul very recently. In around fourteen years and 120,000 miles in my ownership (over 240,000 in total) I've never needed to call out rescue (Britannia have done well out of my premiums!) and MoT pass a couple of weeks ago with no advisories and amazingly low emission readings, engine's been running like a dream since head replaced, all very frustrating!
I should have said, car is a 1992 Torslanda. Last edited by Angie; Oct 19th, 2023 at 22:43. Reason: Further information |
Oct 20th, 2023, 08:58 | #2 |
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Very odd Angie, no compression on all cylinders?🤔
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Its pointless having a battle of wits with unarmed people! Last edited by Moomoo; Oct 20th, 2023 at 09:22. |
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Oct 20th, 2023, 09:25 | #3 |
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Oct 20th, 2023, 10:45 | #4 |
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Can you post a video of turning it over?
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Oct 20th, 2023, 10:54 | #5 |
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Sounds like the bottom cam belt gear has broken the locking tab causing timing to look right but be out
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Oct 20th, 2023, 14:36 | #6 | |
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Quote:
Timing belt could have slipped? Has the tensioner pulley been tightened and re-tightened properly after the head work?
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--- '89 Volvo 240GLT B230E/AW70 '14 Volvo V70 SE D4/M66 FWD '70 Chevrolet Chevelle Malibu '95 Saab 9000 CSE 2.0 Turbo Auto |
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Oct 20th, 2023, 15:17 | #7 |
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Timing belt all ok, camshaft is turning apparently, mechanic thinks the 'something' key, sorry can't remember what he called it, might have sheered and caused the timing to have slipped, anyway that's his next investigation before removing cylinder head. I did ask if faulty crank sensor could be a factor and he thought not. I wondered if new, and obviously stronger, valve springs following overhaul could perhaps have caused extra stress. I'm just waiting to hear what the conclusions are but thought others might have experienced a similar problem and found the cause, could save garage time (=money!).
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Oct 20th, 2023, 21:08 | #8 |
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Not at all extreme and a fairly easy fix
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Oct 20th, 2023, 21:14 | #9 | |
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Quote:
Being a B200 there is risk valves have bent but you might be lucky |
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Oct 24th, 2023, 06:08 | #10 |
MY 240 DRIVES ME!
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I wonder if the engine in a tors is an interference engine?..Firstly sorry for your troubles...Does sound like the shear key has either gone on crank pulley or camshaft..and since the head has done fairly recently makes me think the cam gear may have come loose..If this happened to me i would either remove rocker cover and check for operation with a rachet on the crank pulley..(disconnect battery first)..as it has no compression should not be too hard..or i would remove radiator front grille all belts..is alternator..power steering..now you can remove cambelt cover and get a good look and and access to all pulleys from cam to crank..your problem hopefully will become evident..Here"s hoping you"ve had a lucky escape..hj.
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