valve timing

I recently changed the top timing gear and chain and tentioner and tentioning rail, while in the process my son pionted out to me that I let the chain skip one tooth or maby two we are not sure.
So with the crank @ tdc on #1 how do you tell if the valve timing is correct as there are no marks on the chain and none on the gear.

the car is 300 sd 5 cyl turbo diesel

year/class/ engine code ,would be helpfull,

1982 300 SD Inline 5 cyl turbo diesel S class I have been told that from 1981 thru 1995 the turbo diesel engines in all of these 300 SD (s) are all identical.

click on my email addy,will send data if you wish.regards mechy.

great data !!, your the MAN !!!. thank you thank you
I would have never found the marks without that picture, it sure runs fine, im still working on the cold start problem got any tips for that ?

if you have power to the heater plugs(if fitted) i would remove them them and test individually,hows your fuse box?is it showing signs of corrosion-check all fuses for burnt/fragile ends/check on bulkhead next to battery for fuses(can be well hidden) and a right pain to get at.should go some way to heal the beast!

ya, got new glo plugs that seem to meter correctly, and new battery, maby the old gal just dont have all the compression it should have

may be a lazy starter motor?

spins good , new battery !!!

if only from cold it hard to start,perhaps fuel filter and/or lines are allowing fuel to drain back when left standing(hows the filter?)timer relay for glow plugs may have to short a duration,

the car has sat for about 90 days , but just 2 weeks pryor to that when the "cold start" problem began, I changed all of the fuel filters and glo plugs and did the timer test on the glo sys. All checked out good, thats when i replaced the timing chain, top gear, tensioning rail, tensioner, & front seal. the car runs better now than ever has < !! i mean WOW second gear rubber , but still hard to start up on that first start of the day no matter what time am or pm and it is hot here in Texas right now.

will have a word with our merc tech tomorrow,see what he comes up with.

cool

the man he say-glow plugs,remove and test each one,make sure all glow nicely-fuel draining back over night due to loose pipes/filter o ring faulty.sorry to repeat myself and put doubt on your hard work,but these must be 101% .glow plugs must power up for max 10 secs through ign,compression test on cylinders should be 24.0 to 30.0bar,have you checked valve clearances?

will take out glo plugs, and see glo, Ihave not done this yet but i will. the loose pipes sounds like a possible problem because it cold starts as if it is building fuel pressure ie, idels real rough at first then gradually smoothes out over about 2 min. time. yes I keep the valves adjusted and had done so very recently. I have never checked the compression. thanks a million you been great , ill keep u in the loop

you are right once again, it turns out that Oriley sold me 5 bad glo plugs, amazing, none of the five new plugs would do anything when pulled out and hooked directly to a battery. un fortunatly they are now 102 days old so Oriley auto parts would not exchange them. so after buying a set of new ones from auto zone and testing all good. i installed the new set along with a set of rebuilt injectors that do not leak , the car starts right up , a little rough at first but im still chasing a leak at the pump and i think when i resolve the leak issue it will run smooth at start up. THANK YOU for all of your help and patience.

glad to be of help to you! p.s. let your friends know as well,