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Help!!! fresh rebuilt won't start. |
Post Reply | Page <1 23456 7> |
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S Curry
AMC Addicted Joined: Aug/16/2012 Location: Iowa Status: Offline Points: 598 |
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Wished I could edit my post. Line up TDC and timing marks on the #1 piston.
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SC
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tached_out
AMC Nut Joined: Feb/08/2008 Location: Vancouver, BC Status: Offline Points: 328 |
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According to what you have posted. You have not. Your method is not accurate, it is an approximation. As I said in my first post, ''You may be further off than you think." The method I described is sure fire. It will verify with proof that the timing is where it MUST be. Now you can move on to starting by adding fuel with the knowledge that the timing is in fact where it must be. If your cam and lifters are new the engine will be slow to start because there is no oil in the lifter. It will fire but will need to run a few seconds for them to fill and begin to run normally. It needs all the help it can get by having the timing well within the ballpark. Dead on is better. The method I'm suggesting will verify it is in fact dead on.
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6PakBee
Supporter of TheAMCForum Charter Member Joined: Jul/01/2007 Location: North Dakota Status: Offline Points: 5457 |
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If you have the point style OEM distributor in the engine, and you are confident the harmonic damper TDC mark is accurate, with the engine off, set the mark on the damper to about 10 degrees advanced on the timing scale. Hook up a test light to the distributor lead. With the timing rough set as you did, with the ignition on and the engine off, rotate the distributor against rotation until the test light comes on. This will set your timing to within a degree if done carefully. I always set initial timing with a point distributor using this method. Eliminates all the screwing around on initial fire. Shoot, Volkswagen set their timing like this for decades. |
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Roger Gazur
1969 'B' Scheme SC/Rambler 1970 RWB 4-spd Machine 1970 Sonic Silver auto AMX All project cars. Forum Cockroach |
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SC397
AMC Addicted Joined: Apr/30/2009 Location: Michigan Status: Offline Points: 5476 |
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If your timing is in question, pull all of the plugs out and time the engine by turning it over with the starter. Set it at TDC or slightly advanced. Put the plugs back in and start it. If it doesn't start, there is another issue.
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Jay68SST
AMC Apprentice Joined: May/23/2016 Location: Arcadia, KS Status: Offline Points: 189 |
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On my initial post, I said i set the timing at 10 degrees before TDC and set the rotor at #1 spark plug location. I just haven't used a timing light yet to check, which I will be doing this weekend. So far every time before trying spin the oil pump with a drill to prelube. I get 20-25 psi oil pressure with a drill.
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SC397
AMC Addicted Joined: Apr/30/2009 Location: Michigan Status: Offline Points: 5476 |
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And use a TIMING LIGHT for crying out loud.. |
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Jay68SST
AMC Apprentice Joined: May/23/2016 Location: Arcadia, KS Status: Offline Points: 189 |
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Going to this weekend. Thank you.
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Greyhounds_AMX
AMC Addicted Joined: Nov/14/2009 Location: Kansas City Status: Offline Points: 1268 |
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What is the compression like?
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1968 AMX 390 w/T5
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madmax
AMC Nut Joined: Sep/18/2008 Location: grain valley,mo Status: Offline Points: 401 |
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how did you adjust your valves/lifter pre load? are your rocker arms adjustable or just torque down style?
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American Heavy Metal
restoration parts and mechanical restoration services 70 amx black 1968 kaplan amx ss/racecar 1969 amx racecar 1970 trans am javelin 1969 amx white/platinum 1972 gremlin |
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Jay68SST
AMC Apprentice Joined: May/23/2016 Location: Arcadia, KS Status: Offline Points: 189 |
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Compression is 10.8:1, I am using the flat top pistons out of a 343. Everything else is pretty much stock. Bore, hydraulic lifters, rockers and stock length pushrods. |
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