Hello every one.
I am new on mud and looking for some pointers on this issue that i have with my FJ70. I had posted earlier in the 70 series tech forums but those guys said it would be a better idea to post here since there are more 3Fs running around here and in the 80s secions. So here is a rundown of the problem copy-pasted for you gentlemen to base some kind advice on.
I have this little gremlin in my trusty old FJ70 with the original 3F. The motor has around 273000 KMS on it and does every thing great apart from idling. Tweaked carb to nice tan plugs and everything else to spec, threw in a new dizzy after a suspected bad bearing, timed it to spec, did leak-down tests, no problems there, no vacuum leaks and despite all this, it doesn't quite idle the way it should. I got around to doing the valve lash and set # 1 to TDC , checking the valves specified in the manual. To my surprise, two of those 6 valves to be checked with # 1 at TDC were depressed into the open state all the way in. Same was with # 6 at TDC, with two valves depressed open on that inspection run as well.
Does this decisively point towards a misaligned cam shaft? If i want to drop in a new one, can anyone give me a run down of the correct procedure. Is it to be put in place with the marks aligned on the cam and crank gears with # 6 at TDC as it says in the manual? Are there any other bits to look out for?
Any word on this would be greatly appreciated. It gives me chills thinking that i drove it such for around 4-5K KMS :whoops:.
Regards.
I am new on mud and looking for some pointers on this issue that i have with my FJ70. I had posted earlier in the 70 series tech forums but those guys said it would be a better idea to post here since there are more 3Fs running around here and in the 80s secions. So here is a rundown of the problem copy-pasted for you gentlemen to base some kind advice on.
I have this little gremlin in my trusty old FJ70 with the original 3F. The motor has around 273000 KMS on it and does every thing great apart from idling. Tweaked carb to nice tan plugs and everything else to spec, threw in a new dizzy after a suspected bad bearing, timed it to spec, did leak-down tests, no problems there, no vacuum leaks and despite all this, it doesn't quite idle the way it should. I got around to doing the valve lash and set # 1 to TDC , checking the valves specified in the manual. To my surprise, two of those 6 valves to be checked with # 1 at TDC were depressed into the open state all the way in. Same was with # 6 at TDC, with two valves depressed open on that inspection run as well.
Does this decisively point towards a misaligned cam shaft? If i want to drop in a new one, can anyone give me a run down of the correct procedure. Is it to be put in place with the marks aligned on the cam and crank gears with # 6 at TDC as it says in the manual? Are there any other bits to look out for?
Any word on this would be greatly appreciated. It gives me chills thinking that i drove it such for around 4-5K KMS :whoops:.
Regards.
.
