Stig McNasty Posted June 5, 2016 Share Posted June 5, 2016 is the cam cover removed with a cam belt change? I am concerned that, following a cam change and after one blat, there is oil in the spark plug holes. Is this likely to be a damaged cam cover gasket.Cheers. Link to comment Share on other sites More sharing options...
SM25T Posted June 5, 2016 Share Posted June 5, 2016 Which engine ? Don't remove it on a k-series to change cambelt. Link to comment Share on other sites More sharing options...
Stig McNasty Posted June 5, 2016 Author Share Posted June 5, 2016 D'oh!Sorry, should have given you more of a clue - It's a Sigma. Link to comment Share on other sites More sharing options...
SM25T Posted June 5, 2016 Share Posted June 5, 2016 Could it have been a spill during an oil change ? Link to comment Share on other sites More sharing options...
Stig McNasty Posted June 5, 2016 Author Share Posted June 5, 2016 Possibly. However each plug recess (into which the lead and cap/rubber 'bung' go) are full to the brim with oil. There was only a small amount visible on top, when I removed the cover, and that was mopped up with just a couple of kitchen towel sheets. It wasn't until I removed the plug cap and saw the oil that I got concerned.Do you know if the cam cover is removed during a Sigma cam belt change? Link to comment Share on other sites More sharing options...
Tom_Arundel Posted June 5, 2016 Share Posted June 5, 2016 Depends on who did it. 125 or 150?Can be done without cover off iff pulleys marked up at t.d.c.Slots at back of cams set timing but not as standard ford, beware of standard settings - setting bar. inlet cam is retarded several degrees.Cover probably removed to set cams, may not be tightened down properlyThere is a rubber seal around cam cover to head joint but it also requires sealing compound around front cam bearing caps. Cover requires screwing down properly with small torque wrench. Link to comment Share on other sites More sharing options...
Stig McNasty Posted June 5, 2016 Author Share Posted June 5, 2016 It's a 150 Tom, and the cam belt/second annual service was by a well known specialist.The cover bolts seem to be tight, and there is no external seepage around the cam cover rubber seal/gasket line. What (little) oil I saw outside probably blew back from what had seeped out of the plug bungs. Link to comment Share on other sites More sharing options...
Stig McNasty Posted June 5, 2016 Author Share Posted June 5, 2016 Possibly. However each plug recess (into which the lead and cap/rubber 'bung' go) are full to the brim with oil. There was only a small amount visible on top, when I removed the cover, and that was mopped up with just a couple of kitchen towel sheets. It wasn't until I removed the plug cap and saw the oil that I got concerned.Do you know if the cam cover is removed during a Sigma cam belt change? Link to comment Share on other sites More sharing options...
DJ. Posted June 5, 2016 Share Posted June 5, 2016 When I changed the cambelt on my 125, I did remove the cam cover. To get the timing correct the unkeyed crank sprocket and cam sprockets are supposed to be free to move as the belt is tensioned, so it is vital to lock the cams (and crank) in place. I replaced the rubber seal on the cam cover, if yours is torqued up ok I suspect they reused the gasket. Link to comment Share on other sites More sharing options...
Tom_Arundel Posted June 5, 2016 Share Posted June 5, 2016 As I said, depends on who did it but probably yes. Could be a huge overspill when filling up oilSigma requires front crank pulley removal if belt covers are fitted, which can lose cam timing and require removal of cover to re-time cams125, 140/150 have different cams, belt tensioner and timingIf there are no other leaks, especially around exhaust, clean it out, check oil level and try another blat Link to comment Share on other sites More sharing options...
Stig McNasty Posted June 5, 2016 Author Share Posted June 5, 2016 Thank you all for your ideas and guidance.I'd be surprised if it was a big spillage during filling as there seemed to be no signs of oil or deposits immediately around the filler.I'll have a closer inspection tomorrow. Link to comment Share on other sites More sharing options...
SM25T Posted June 5, 2016 Share Posted June 5, 2016 Also talk to the service company that did it. Link to comment Share on other sites More sharing options...
Tom_Arundel Posted June 7, 2016 Share Posted June 7, 2016 Did you sort your oil problem,not that its the weather for blatting! Link to comment Share on other sites More sharing options...
Stig McNasty Posted June 7, 2016 Author Share Posted June 7, 2016 It is somewhat inclement!I'm taking it to the people who serviced it. I was worried that if I removed the cam cover to check the gasket it might be a case of 'well, it was ok when it left here'. Link to comment Share on other sites More sharing options...
Stig McNasty Posted June 10, 2016 Author Share Posted June 10, 2016 All sorted now. The culprit was a slight knick in the inner gasket where it had been caught by obe of the retaining bolts.Thanks again for all your help. Link to comment Share on other sites More sharing options...
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