my 1985 ford f250 runs great when i advance the timing , but then wont crank over well ( barely turns over) i set the timing to where it turns over well and wont run well .. i changed dist, computer, coil, is there anything else to check ?
2007-03-25 14:54:00 · 4 answers · asked by joe h 1 in Cars & Transportation ➔ Maintenance & Repairs
Sounds like the timing chain or gears have jumped time . To check turn the crank pulley to top dead center and see if number one the piston is at top of cylinder., with the valves closed. If not you buy a new timing set and gaskets and put it back to proper timing. Either that or the distributor was way out of time to begin with You can do the same test as you check the engines mechanical timing.
2007-03-25 15:08:44 · answer #1 · answered by redd headd 7 · 0⤊ 0⤋
this model year had 2 systems, computer advance and mechanical advance. if there is a vacuum hose to the distributor, make sure you are getting manifold vac. to the unit, and make sure the advance unit functions properly. if it is ecc4(comp control) there is a "spout connector" that needs to be disconnected to adjust the timing. spec is 12btdc low alt, 14 high alt. also be sure the battery and starter is in good condition. the engine should crank fine even with the timing advanced significantly. e-mail me if you need step by step procedures, and specify which system you have. good luck
2007-03-25 15:14:54 · answer #2 · answered by Anonymous · 0⤊ 0⤋
What Degree are you setting the timing to to where it runs well? On that motor it should be set at around 4 to 6 Degrees BTDC (Before Top Dead Center) RPM should be set at 800-900 RPM. You should use a timing light to set the timing. if you have it too far advanced or retarded it will not start.
2007-03-25 14:59:23 · answer #3 · answered by gearnofear 6 · 0⤊ 0⤋
truly stressful to respond to. A cracked distributor cap would reason this. Me i'd ask your self what replaced in simple terms in simple terms before concern like a stressful pull up a hill did it overheat? stuff like that. I additionally am a company believer in 35mph is larger than stopped so make adjustments mutually as close to to areas shop. I additionally think of gas additionally, water in gas ought to try this additionally. save posting with greater documents i'm a lumberjack
2016-10-01 11:57:39 · answer #4 · answered by ? 4 · 0⤊ 0⤋