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#1 |
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Rover 75 1.8t Join Date: Oct 2015
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![]() How'do folks
![]() I've mentioned this in a previous post (1.8t misfire) I suspect the Timing Belt may have slipped on my 75 ![]() I may be wrong - however, this has me a bit concerned r.e other potential causes of my initial misfire - I don't want to run the engine at all now, so won't be trying new plugs/coils... r.e a slipped belt - If a belt HAS slipped - is it possible to diagnose using the timing marks ? ![]() I was thinking - if the belt has slipped - i'll be rotating the crankshaft in Vain ![]() ![]() ![]() my current thinking is - I have to just go ahead with a belt replacement - and hope there has been no damage caused - if there HAS - i'll find out after replacing the belt ![]() what damage is likely to occur following a belt slipping and timing being off ? Paul. |
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#2 |
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![]() Firstly i would check all timing marks line up as they should that way you can be sure everything is ok.
![]() Then you can start to find the the cause of the misfire. ![]() If the belt has slipped it could be drastic ![]() ![]()
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#3 |
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![]() If you turn the engine so the front pulley mark lines up - the cam belt change one not the TDC one - then the lines across the cam pulleys should show if it's all in sync or not. I think a stock engine can be one tooth out without causing contact.
If there had been any piston/valve contact and a bent valve you'd have a misfire or uneven idle. Mine sounded like a Subaru flat four at tickover when I bent a valve. |
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#4 |
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![]() Take a look at my thread in the 'Tech help', 1.8 belt disaster to see what you are facing, good luck!
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#5 |
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![]() I pulled the top cover off earlier had a wee look - nothing much to report - other than maybe the tensioner seemed off it's mark - there was a maybe wee bit slack in the belt
![]() I don't have a 22mm?? socket for the crank pulley - and it got a bit cold and dark - i'll acquire a 22mm socket and rotate the crank to check if the timing is off. I'm of the feeling - i suspect it has slipped - so i should go ahead and replace the belt with timing/tension correct - fire up the car...... ![]() what's the thinking on this ? if any damage has been done it's already done - and i'll know right away ![]() I think i will have occured some damage to the valves(?) as i heard sounds you don't want to hear - didn't run for long tho ![]() Paul. |
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#6 | |
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![]() Quote:
Good luck, Glenn
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Southern Slovakia Anything can happen in Formula 1 and usually does - Murray Walker 1999 Triumph Trophy 900, Saddlesore 1600, Iron Butt Riders Association #63720 2005 Rover 75 CDT Tourer MK2 |
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#7 | |
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![]() Quote:
![]() ![]() I do think there was a bit excess slack ![]() Paul. |
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#8 |
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![]() Isn't there a timing mark on the outside (plastic) cover? If so, you could check the timing without removing the bottom pulley.
![]() EDIT. Re-read. I see that you are just using the socket to rotate the engine!
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Oil in my veins! Last edited by roverbarmy; 23rd February 2018 at 06:51.. |
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#9 |
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![]() You will have a small amount of slack in the longest section of the belt you could twist the belt about 45 degrees.
Good luck.
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#10 | |
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![]() Quote:
Is that WILL have or SHOULD have ? ![]() I'm no further forward today - other than i've been preparing for the "Inevitable" ![]() ![]() ![]() so i'm expecting/preparing for a head off valve replacement ![]() I still plan to check timing before i start pulling her to bits ![]() ![]() ![]() ![]() I'm not sure what i'll do if the timing lines up ![]() I'm hoping to find timing IS off - in this case i think i would just accept that valves have bent - rather than fit new belt/tensioner and hope for the best - I heard contact and from the way it was last running, i'd guess a few are stuck open. I think in this case i'd like to have a go at repairing this myself ![]() It may take a week or 2 or 3....lol.... Once i have funds for all the parts i'll need - it adds up ![]() Paul. |
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