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#1
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Engine won't turn over
Hi everyone,
My 1971 Mercedes 250 slowly started to get harder and harder to turn over. I replaced the spark plugs, and the distributer and points seem fine, but still nothing (also not battery; jumped to my other car) The only thing really that has changed is the weather (90 degrees to now in the 60s). I was thinking maybe it was the choke on the carbs (too tight; I have webers). Or maybe the coils (thinking of changing to pertronix electrical coils plus ignition system). I guess my overall question is why now this problem (really happened over coarse of about month). Are ignition system issues like transmission issues in that it happens " gradually" get worse; or do they just stop "abruptly" like say a broken headlight bulb? Thoughts/comments? Thanks Last edited by Jub; 10-08-2012 at 12:00 PM. |
#2
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when you say "wont turn over" does that mean there is no cranking at all , or that there is cranking, but not starting?
when it runs, does it run well? burn any oil? is the timing, valve lash and dwell all set to specs? as others will tell you "could be a lot of things" the more details you provide, the better able we can help
__________________
Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
#3
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The engine cranks. I just end up turning the key as it cranks but it wont turn over and start up. Of late, it now just will not start.
Replaced spark plugs, replaced spark plug wireset, and switched batteries. If this doesn't work: Petronix electrical ignition and coils? |
#4
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It doesn't matter what sort of car you are working on because there is one basic set of rules;
1/ check compression.A leak down test is the only real way to make sure everything is OK. 2/ set the valves (and check timing chain wear on mercedes. 3/ overhaul all the ignition and get it perfect. 4/ Check fuel supply and make sure you are getting 100% fuel delivery. 5/ Check starter speed and overall condition of starter and battery. 6/ start the engine and double check the timing. 7/ check CO level. |
#5
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valves, yes valves;
__________________
Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
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