Commissar Posted May 30, 2009 Share #1 Posted May 30, 2009 (edited) Hi, my name is neil, i just bought a 1971 240, and im in the process of doing a tune up, when i got it earlier today, it wouldnt stay alive, it would half idle with the gas pressed down a fair way, but after a spark plug change, it will have some semblance of idling, but it does not want to rev, but if you work the throttle a bit, once it gets past about 1500 it will rev fine, is this just a carb problem, what can i do to fix it?Also, back to my original quesiton, what Type of oil, filter, and how many quartsalso also, can anyone fill me in on how to change the oil in the SU carbs,sorry for any stupid questions, im pretty new to these carsthanks-Neil Edited May 30, 2009 by Commissar Link to comment Share on other sites More sharing options...
Bruce Palmer Posted May 30, 2009 Share #2 Posted May 30, 2009 Neil,Welcome to the wonderful world of....If you want to clear out the old oil from the carb dampers so you can start out knowing what you have in there, just soak the old oil up with rolled up tissue stuffed down in there. We run ATF and have for years. Refill to about a 1/2" from the top of the tube that rises with the piston. Don't worry arout over filling as the excess will just get sucked into the engine and burnt.FYI - being new to the Z, we have a DVD ZTV 01 that covers several L series engine related issues you might want to study. It's all round a pretty good teaching tool for new owners. It also covers so Hitachi (SU) carb issues. Again, welcome to Zs and the board. Link to comment Share on other sites More sharing options...
Commissar Posted May 30, 2009 Author Share #3 Posted May 30, 2009 hey, thanks for the info, im wanting to change the oil as well, do you know what viscosity i need, as well as how many quarts? thanks Link to comment Share on other sites More sharing options...
sblake01 Posted May 30, 2009 Share #4 Posted May 30, 2009 (edited) 5 1/4 qts. including the filter. I use 10W40. Here's a lubricant chart from the FSM: Edited May 30, 2009 by sblake01 Link to comment Share on other sites More sharing options...
Commissar Posted May 30, 2009 Author Share #5 Posted May 30, 2009 thanks Link to comment Share on other sites More sharing options...
guy_geo Posted May 31, 2009 Share #6 Posted May 31, 2009 20W50 for me Link to comment Share on other sites More sharing options...
JonnyRock Posted May 31, 2009 Share #7 Posted May 31, 2009 I use 10W4020W50 for meInteresting the the colder climate guy uses the heavier weight oil... Link to comment Share on other sites More sharing options...
bigoak Posted May 31, 2009 Share #8 Posted May 31, 2009 Yeah, but we only run on nice days up here... Link to comment Share on other sites More sharing options...
JonnyRock Posted May 31, 2009 Share #9 Posted May 31, 2009 Yeah, but we only run on nice days up here...Nice days is all they have in SoCal... Link to comment Share on other sites More sharing options...
beandip Posted May 31, 2009 Share #10 Posted May 31, 2009 Hi, my name is neil, i just bought a 1971 240, and im in the process of doing a tune up, when i got it earlier today, it wouldnt stay alive, it would half idle with the gas pressed down a fair way, but after a spark plug change, it will have some semblance of idling, but it does not want to rev, but if you work the throttle a bit, once it gets past about 1500 it will rev fine, is this just a carb problem, what can i do to fix it?thanks-NeilNeil, the idle/revving question. This could be timing and or the Carbs are out of adjustment. If your Z has the stock ignition , set the timing at 9 or 10* btdc and for the carbs . Contact ZTherapy they have a video that shows and explains the whole procedure. If you do a search for adjusting SUs there is plenty of info already in the memory here also. Gary Link to comment Share on other sites More sharing options...
bigoak Posted May 31, 2009 Share #11 Posted May 31, 2009 Nice days is all they have in SoCal... What is the right viscosity for earthquakes??? Link to comment Share on other sites More sharing options...
Zedyone_kenobi Posted May 31, 2009 Share #12 Posted May 31, 2009 5wbuttpucker Link to comment Share on other sites More sharing options...
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