5ksev Posted December 22, 2011 Report Share Posted December 22, 2011 hey all, iv got a 5k with 32/36 weber? ( i think ) tighe 25/65 cam 10:1 compression premium 98 fuel i got it all back together today, and it was running fine for about an hour, i turned if off, to put a stronger spring on the throttle return, and didnt like it so i put the old one on again.. started it up, and then all of a sudden it just wouldnt idle.. it kept stalling.. so i turned the throttle up, and it will idle at around 1200+rpm, but if i slow it down to about 800-1000 it runs for about 5sec, then gets real rough and stalls.. is this because of: carby needing to be tuned? timing is wrong? or my dizzy needs to be adjusted? video of it idling alright http://youtu.be/tply9tZh2EU Quote Link to comment Share on other sites More sharing options...
SLO-030 Posted December 22, 2011 Report Share Posted December 22, 2011 Dude, please consider making a rides thread and put all updates/questions in there. 6 threads on the first page alone. Cheers :) Quote Link to comment Share on other sites More sharing options...
5ksev Posted December 22, 2011 Author Report Share Posted December 22, 2011 Dude, please consider making a rides thread and put all updates/questions in there. 6 threads on the first page alone. Cheers :) no idea how to do that but yeah.. sorry about all the threads.. i just keep coming across problems!! hopefully this will be the last one. Quote Link to comment Share on other sites More sharing options...
Trev Posted December 22, 2011 Report Share Posted December 22, 2011 Did you bed in the cam? Quote Link to comment Share on other sites More sharing options...
5ksev Posted December 22, 2011 Author Report Share Posted December 22, 2011 sure did, my mate ( performance mechanic ) said to run it for an hour or so, over different rpm's Quote Link to comment Share on other sites More sharing options...
Trev Posted December 22, 2011 Report Share Posted December 22, 2011 ok, what is his opinion on it then? Go over and recheck the valve clearances. Quote Link to comment Share on other sites More sharing options...
5ksev Posted December 22, 2011 Author Report Share Posted December 22, 2011 i havnt spoken about it to him yet, as its a bit late.. how do i go by checking the clearances? Quote Link to comment Share on other sites More sharing options...
Trev Posted December 22, 2011 Report Share Posted December 22, 2011 I don't know the value but you need to go over and check them with feeler gauges and adjust accordingly, how did you set it up prior to this? Quote Link to comment Share on other sites More sharing options...
5ksev Posted December 22, 2011 Author Report Share Posted December 22, 2011 I didn't, I just took my head off and got a place in town to shave it. And put hd valve springs in.. I don't understand how I adjust the valves though? Quote Link to comment Share on other sites More sharing options...
Trev Posted December 22, 2011 Report Share Posted December 22, 2011 Oh, well I would say that there is your problem, when it heats up the gap closes, the valve was most likely pushed open a little bit and it didn't like to run at low rpm. Adjust them and I bet it will be fine. Quote Link to comment Share on other sites More sharing options...
Figjam14 Posted December 22, 2011 Report Share Posted December 22, 2011 pretty sure there set at sixteen thou Quote Link to comment Share on other sites More sharing options...
Trev Posted December 22, 2011 Report Share Posted December 22, 2011 Did a search around and this is the best I can find: Valve Clearance Hot IN; 0.20mm, 0.008in. EX; 0.30mm, 0.012in. Cold IN; 0.13mm, 0.005in. EX; 0.23mm, 0.009in. Quote Link to comment Share on other sites More sharing options...
Evan G Posted December 22, 2011 Report Share Posted December 22, 2011 blocked idle curcit Quote Link to comment Share on other sites More sharing options...
altezzaclub Posted December 22, 2011 Report Share Posted December 22, 2011 blocked idle curcit X2 Trev could be right, but that is pretty esoteric. You would need the tappets set at under 2thou as they only grow 3thou between cold and hot. Clean the idle jet and blow out the idle circuit in the carb. Evan can help, he has had his apart a zillion times! :laff: Quote Link to comment Share on other sites More sharing options...
altezzaclub Posted December 22, 2011 Report Share Posted December 22, 2011 Arrrgh! 5K ! Hydraulic tappets... You don't set them. Much more likely to be carb than anything else in that case. Quote Link to comment Share on other sites More sharing options...
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