Fuel leak

[Steve]

Started the car this afternoon to take for a cruise around and I got a fuel leak where the arrow is in the pic,nothing major about a thimble full of fuel came out where the gasket sits.The car was running like a dog and wouldn't idle at all so I took both jets out and cleaned them up with a squirt of carb cleaner,I also gently snugged up the carb to manifold bolts too.Car runs perfect now and there appears to be no leaks after driving for an hour.Would the sticking jet cause fuel to be forced out where the arrow is or do I need a new gasket.

 

[4spd69RR]

Is the arrow pointing to where the carb mounts to the manifold? It was probably drawing in air from that location causing your air/fuel mixture to be off. Tightening the carb back on probably fix your problem. Did the engine have a rough idle before tighten the carb?

 

[Steve]

Is the arrow pointing to where the carb mounts to the manifold?

Yes,I've had sticking needle valves cause rough idle before and assumed this to be the case again.I only checked tightening the carb to manifold as an afterthought just to see if it had worked loose and maybe caused the leak.As you say this was probably my problem all along.Do they have to be a specific torque or does it not matter as long as they're tight.

 

[Basketcase]

it's the English weather.......

 

[4spd69RR]

The torque spec is about 7 in/lbs. for each nut. I have pasted a list of torque values I refer to often. I'm sure the fuel you use there is a lot better than what we use here in the States. Your engine bay looks pretty clean and am sure the rest of your runner looks the same.


Fastener Torque Thread Size
A/C Compressor to Engine Bolt 30 3/8-16
Alternator Adjusting Strap Bolt 200 in/lbs 5/16-18
Alternator Adjusting Strap to Block Bolt 30 3/8-16
Alternator Mounting Bolt 30 3/8-16
Camshaft Lockbolt 35 7/16-14
Carburetor to Manifold Nut 7 5/16-24
Clutch Housing Bolt 50 7/16-14
Connecting Rod Nut - Plain 45 3/8-24
Crankshaft Rear Seal Retainer 30 3/8-16
Crankshaft Bolt (Vibration Damper) 135 3/4-16
Cylinder Head Bolt 70 7/16-14
Distributor Clamp Bolt 15 5/16-18
Exhaust Manifold Nut 30 3/8-16
Exhaust Pipe Flange Nut 50 7/16-20
Exhaust Pipe Clamp Nut 20 3/8-24
Fan Attaching Bolt 15-18 5/16-18
Flywheel Cover Bolt 7 1/4-20
Flywheel Housing to Block Bolt 50 7/16-14
Flywheel to Crankshaft Bolt 55 7/16-20
Fuel Pump to Block 30 3/8-16
Intake Manifold Bolt 40 3/8-16
Main Bearing Cap Bolt 85 1/2-13
Oil Pan Drain Plug 20 1/2-20
Oil Pan Bolt 15 5/16-20
Oil Pump Cover Bolt 10 5/16-18
Oil Pump to Block Bolt 35 3/8-16
Rocker Shaft Bolt 25 3/8-16
Spark Plug 30 14mm
Starter Mounting Bolt 50 7/16-14
Timing Cover Bolt 15 5/16-18
Torque Converter Housing Bolt 30 3/8-16
Torque Converter to Flexplate Bolt 270 in/lbs 5/16-24
Valley Pan End Bolt 9 1/4-20
Valve Cover Stud & Nut 7 1/4-20
Vibration Damper Pulley Bolt 200 in/lbs 5/16-20
Water Pump to Housing Bolt 30 3/8-16
Water Pump Housing to Block Bolt 30 3/8-16

 

[Steve]

Cool thanks for that,saved them all