Hi all again after doing the head gasket and hot spots my engine now sounds very knock. Not the bottom end as was fine before and plenty of oil pressure. The hotspots protruded from the head a bit more than I would have liked as I think the head has been skimmed but it turns over fine both on the starter and by hand Help much appreciated I'm at my wits end with this thing!
steve2286w
Well-Known Member
When I had a knock on mine it was the injector spray pattern wrong , that sounds more tappety , have gaps been set correct and nuts tightened , when head as off did you check cam sliders and rollers for flat spots
I very well could have got the clearances wrong as this is my first time doing them never owned anything with manual tappets before. I used the rule of 9 method. But as I say its quieter now the timings been retarded idles great but rattles when revved. I was thinking there may be a possibility one of the injectors has picked up some crap while out.
steve2286w
Well-Known Member
If it’s noisy injector, you can slacken the Diesel feed pipe nut On top of injector while running , you could do each in turn and compare change in engine running, if a good one is slackens off then should run rougher
To check the spray pattern the injector needs to be removed and connected to pipe and run engine , but keep away from high pressure spray
To check the spray pattern the injector needs to be removed and connected to pipe and run engine , but keep away from high pressure spray
Will do but can't start it again as the glow plug bulb in the dash blew so I'm waiting for some more. Am I right in saying the clearances are 0.10 in inches? Also what size is the crank pulley Bolt as I need a socket to fit as I had a real struggle turning the motor so I think when I did the clearances I didn't get the valve fully open to adjust the other corresponding valve. Just want to say thanks for all your help where would we be without landyzone lol
That's what I thought does anyone know the size of the crank pulley Bolt I was turning it with a big screwdriver through the starter dog but you get a valve opening slightly too far and it starts to close and you can't go back because of the starter dog only working one way. I think a socket would be better just need to know the size so I can get one
steve2286w
Well-Known Member
I think the heater plugs still work with bulb blown , it’s a 6v normally
It’s the alternator doesn’t work if bulb blown
If you have set clearances to 0.1in they will be noisy I guess you meant 0.01 inches 10 thou or 0.25mm
not sure on bolt size I’ll measure over weekend
Got mine on bench I’ll get a pic
Cheers! Don't think the plugs are working iv ordered new wires and like I say the bulbs. Yes that's what I meant 10 thou. Like I say it doesn't knock at idle now I'd have assumed if a piston was whacking a hot spot it would do it at idle as well. I did measure the protrusion of the hot spots it was about 6 to 8 though just measuring with a feeler gauge but I have used quite a thick mls head gasket.
Huddy84
Well-Known Member
0.25mm is what I use for the 2.5 na diesel, I also check with a 0.28 to make sure I get it bang on.
Not certain if the 2.25d is the same, but the pump on mine has a timing hole in the side. Undo the nut and there is a disc inside with a V notch in it, it’s actually easier using a small flat head screwdriver to find it. That would fet your fuel timing bang on.
The noise unfortunately sounds like something touching to me, I hope it isn’t. You may be stuck having to remove the head again to look, if you do check everything. This roller was in mine but wasn’t causing an issue, just found it on strip down.
Not certain if the 2.25d is the same, but the pump on mine has a timing hole in the side. Undo the nut and there is a disc inside with a V notch in it, it’s actually easier using a small flat head screwdriver to find it. That would fet your fuel timing bang on.
The noise unfortunately sounds like something touching to me, I hope it isn’t. You may be stuck having to remove the head again to look, if you do check everything. This roller was in mine but wasn’t causing an issue, just found it on strip down.
ifloochies
Well-Known Member
That is definitely not Diesel knock....
You can distinctly hear the top end diesel and valve train clatter, but unfortunately I have to say that sounds like mechanical noise.
Slacken off injector pipes one after another holding a rag to catch the fuel spray at the union whiles listening out for a reduction in that noise as you move from cylinder to cylinder.
steve2286w
Well-Known Member
Hot spots definitely flush with head and secured with roll pin
The crank bolt on mine is about 41mm 1 5/8” AF
The crank bolt on mine is about 41mm 1 5/8” AF
