valves

[John MacDonald]

did compression check on my 239, 59a everything seems ok coming out at 125 psi.but car will not start or idle, carb and fuel pump check out, poured gas down carb and backfire and smoke, timing or valves,give me your suggestions , condenser, coil, ran fine month ago ,sat then this ?? carb rebuilt last year, newer fuel pump. Help

 

[flatjack9]

Timing

 

[JayChicago]

Timing

OP said: “ran fine month ago ,sat then this”

What would cause timing to change while sitting?

 

[Lawson Cox]

OP said: “ran fine month ago ,sat then this”

What would cause timing to change while sitting?

My thoughts exactly. Vehicles are not affected by changing back and forth with daylight saving time. LOL and all that stuff.

 

[38 coupe]

Not valves, 125 PSI on all cylinders means the valves are moving and seating.
Diagnose the problem, fuel or spark. Verify spark before looking at fuel. Do you have a hot blue spark at the plugs?

 

[Alaska Jim]

fiber timing gear broke a few teeth while trying to start? I have seen it happen

 

[tubman]

fiber timing gear broke a few teeth while trying to start? I have seen it happen

Especially if it's a current replacement. They have proven to be inferior. If you need to replace it, strongly consider an aluminum gear.

 

[John MacDonald]

must have spark because it backfired after pouring gas down carb,

 

[drolston]

Especially if it's a current replacement. They have proven to be inferior. If you need to replace it, strongly consider an aluminum gear.

Would you still get good compression readings it the timing gear broke some teeth?



- Check for a blue spark that will jump half an inch when cranking. If good, go back to the carb and fuel system. If not, Check:
- Coil wire fully inserted into coil and distributor. Primary connections and wires good.

- Check battery voltage at coil with points open; drop a couple volts with points closed. Nudge the engine rotation by crank pulley or shoving the car a bit in high gear.

- If all that looks good, pull the distributor, clean and adjust the points precisely. And replace the condenser.

 

[John MacDonald]

checked spark, lit me up like a roman candle, check fuel pump next week, thanks guys

 

[flatjack9]

Would not get good compression on all cylinders with bad timing gear.