Looks to me to be the EGR valve. Post a wider scale photo to verify. What year is the vehicle? What engine?
Looks like the engine's a Windsor, likely a 302. It should have a hose going up front to a device screwed into the water jacket, heater hose water pipe or the thermostat housing, probably the housing.
That line probably goes to a thermally controlled valve and then to a manifold vacuum source. I did a quick search and this is what I came up with: http://repairguide.autozone.com/zne...00c152/80/05/3c/fb/large/0900c15280053cfb.gif This is from a 72 LTD...not idenical, but probably close enough.
Thanks I will check that but since yesterday the motor won't start. So I need to open a new thread ...
Has the motor been changed to a 429 or is there a nick on the spec sticker and is supposed to read 4.9 "302" ? The 73 didn't come with a 429 as far as I know.
it's the original motor 429 was an option until 73. On the spec sticker it's 429. serial number is 3A48Nxxxxxx .N for 429 4V. marty report says in 1973, 519 ranchero with this motor/transmission
That carb looks aftermarket or a possible dealer replacement, as the 385-series engines started life with a 4300-D. If the engine's getting flooded, the carburetor is the place to start looking for why it is flooding.
Yes, 73's came with 429 cid engines. 1974 came with 460 engines. 73 had a square bore carb, 74 came with spread-bore carb. Both versions of this carb are almost impossible to get to function correctly. Victims of emission laws and very sensitive to any dirt intrusion. Their main flaw is a poor design of the accelerator pump that refuses to work, results in a stumble on acceleration from idle. I wasted many hours in attempts to solve the defects in those carbs, finally went with Holley carbs and tossed those Ford carbs in the trash.
This may help... maybe... my manuals don't cover 1973... but this is what was available in 1972 for 429's, if you are looking to keep it stock looking.
FLTR is a small filter used to keep contaminants out of the system when that vacume valve dumps the vacume to the EGR valve. Looking at that diagram reminds me of why nearly all these engines had those cheap plastic valves and delays removed quickly so the owners would quit threatening to kill the Ford Dealer mechanics over drivability problems. Remember, this ham fisted mess was an attempt to comply with early emissions laws and most states did not require all those components to be present. A 600cfm or 650cfm vacume secondary square bore Holley with an electric choke should be more than sufficient for a standard 429 or 460 engine. Tap into the white Stator wire from the alternator to power the electric choke. EDIT= Make sure to order the carb with a Ford specific transmission kick-down lever.
