ditchman Posted May 9, 2013 Report Share Posted May 9, 2013 I am stumped !..i can usually sort out all the "funnies" on the 1988 turbo desiel...but i am stumped this time When i am driving , it goes a smooth as silk, but when i am coming to a corner and slow down or any time i slow down i hear an distinct "tick" it sounds like a loose tappit/ rocker...all those have been checked and are at 10thou/.25mm when the enjine is under load its fine......weird..cant figure it out imsure all the shells are fine and gudgeon pins ok as they were done at 78000 with the timing belt but its not a knock or a tap but a "tick" that slows down as the motor slows down . similar noise to a stone in a tyre ! any ideas ? Quote Link to comment Share on other sites More sharing options...
Twistedsanity Posted May 9, 2013 Report Share Posted May 9, 2013 Exhaust manifold gasket? Quote Link to comment Share on other sites More sharing options...
aga man Posted May 9, 2013 Report Share Posted May 9, 2013 vaccum pump, diesel lift pump. try running without auxillary belt to see if tick is pully/tensioner related. careful with no power steering tho Quote Link to comment Share on other sites More sharing options...
ditchman Posted May 9, 2013 Author Report Share Posted May 9, 2013 right will investigate those......... Quote Link to comment Share on other sites More sharing options...
goldypurple Posted May 10, 2013 Report Share Posted May 10, 2013 Are you sure its engine related? could be wheel or propshaft related. Quote Link to comment Share on other sites More sharing options...
ditchman Posted May 10, 2013 Author Report Share Posted May 10, 2013 Are you sure its engine related? could be wheel or propshaft related. i will check it out........... Quote Link to comment Share on other sites More sharing options...
ditchman Posted May 10, 2013 Author Report Share Posted May 10, 2013 i will check it out........... checked propshafts all fine ......made a listening rod and stuck it on the fuel lift pump.....it might be the lift arm tapping against the cam what do you rekon Quote Link to comment Share on other sites More sharing options...
aga man Posted May 10, 2013 Report Share Posted May 10, 2013 checked propshafts all fine ......made a listening rod and stuck it on the fuel lift pump.....it might be the lift arm tapping against the cam what do you rekon quite possible mate. a dodgy lift pump will generally affect the power eventually. as said the vaccum pump {wabco} can make a ticking/tapping noise when they are on the way out. Quote Link to comment Share on other sites More sharing options...
ditchman Posted May 10, 2013 Author Report Share Posted May 10, 2013 (edited) quite possible mate. a dodgy lift pump will generally affect the power eventually. as said the vaccum pump {wabco} can make a ticking/tapping noise when they are on the way out. i fitted a cheap allparts pump 18mths ago... i think the return spring is not strong enuff to keep it against the cam. the tick is at the same frequency as a valve tappit..and coupled with the fact it has got worse since i fitted 2 new / recon' cav injectors..will prberly mean that there is more or less ? fuel going back thro the bleed off line which might alter slightly the pressure in the pump side of the fuel system...i will fit 2 more recn injectors next week when i can afford it then if it makes a difference.....new decent lift pump....tomorrow i will check the wear on the arm on the pump cheers for bouncing this prob about ditch ps made a listening rod and the vacuum pump sounds ok........a rebuild kit is only £16.50 so might do it anyway as its done 100000miles now ! Edited May 10, 2013 by ditchman Quote Link to comment Share on other sites More sharing options...
aga man Posted May 10, 2013 Report Share Posted May 10, 2013 no problem ditchman. keep us posted Quote Link to comment Share on other sites More sharing options...
lister1 Posted May 10, 2013 Report Share Posted May 10, 2013 The injector pumps can make a tick if the lift pump is getting week. The reducedbfuke flow can force the injector pump to suck more which makes a ticking noise. If ya know what mean. Quote Link to comment Share on other sites More sharing options...
ditchman Posted May 10, 2013 Author Report Share Posted May 10, 2013 its all pointing to the lift pump.......i will make a new post when its sorted..... cheers you boys Quote Link to comment Share on other sites More sharing options...
bikemad24 Posted May 10, 2013 Report Share Posted May 10, 2013 has it got a viscous fan? is it catching on the radiator ducting. just check your fan for scrapes on the fins. keep it simple. you dont want to spend money before you 100% sure you know what the problem is. Quote Link to comment Share on other sites More sharing options...
ditchman Posted May 11, 2013 Author Report Share Posted May 11, 2013 has it got a viscous fan? is it catching on the radiator ducting. just check your fan for scrapes on the fins. keep it simple. you dont want to spend money before you 100% sure you know what the problem is. checked the viscous fan thats fine............you really get turned to all this different noises these bloody vehicles make .....sounds different everyday.....im really "anal" about enjines !! Quote Link to comment Share on other sites More sharing options...
the pigeon man Posted May 11, 2013 Report Share Posted May 11, 2013 Blocked injector !? I had this problem few times now Quote Link to comment Share on other sites More sharing options...
ditchman Posted May 11, 2013 Author Report Share Posted May 11, 2013 Blocked injector !? I had this problem few times now no not a blocked injector, the enjine is running like a sewing machine.........i will sort this one way or another !! Quote Link to comment Share on other sites More sharing options...
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