does anybody know what the load control valve does? second set of pics I think. my old carb had a port on the back for it, but the new one does not. can I plug it?
Yo ROSSI.does anybody know what the load control valve does? second set of pics I think. my old carb had a port on the back for it, but the new one does not. can I plug it?
Hey thanks miesk5! For some reason all my thread notifications were not showing up in the email. Just noticed. I bypassed the LCV and plummed straight to the egr since i didnt have the correct lcv port on my remaned carb... I am not sure what effect it has at WOT, but it seems to run just fine. It is so vague as to whether or not they are required, but you cant help but think having the EGR turn off at WOT is a good thing. Oh well.Yo ROSSI.
Vacuum Vent Control Valve (LCV in some Vacuum Diagrams:, Also called the Load Control Valve (LCV);
D7TZ-9H301-A .. "T/E (Thermactor Emission-smog pump) Vacuum Vent Control Valve Assy" / Marked: D7TE-9H301-AA or D8TE-9H301-AA / Obsolete
Applications: 1977/79 F100/350 & 1978/79 Bronco.
414 Umbarger Rd #E
San Jose, California 95111
Call Green Sales @ 1-800-543-4959 for current availability and pricing on Ford and Lincoln Mercury Parts
PART #: D7TZ9H301A
Description: . Alternate #: D7TZ-9H301-A, D7TZ*9H301*A
No other FoMoCo Dealer or obsolete parts vendor has any.
EGR SYSTEM WOT (WIDE OPEN THROTTLE) LOAD CONTROL VALVE
Some EGR systems feature a load control valve that closes the EGR valve when the engine requires maximum power at or near wide open throttle.
The valve is installed in vacuum line between the ported vacuum connection on the carburetor & EGR valve; vacuum line from carburetor venturi vacuum tap is connected to the top part on the WOT valve and provides control for the valve. When venturi vacuum is at a predetermined level near wide open throttle, it is strong enough to overcome the calibration spring pressure and unseat the diaphragm valve, diverting EGR source vacuum to the atmosphere and causing the EGR valve to close. Normal EGR flow is resumed when there is a reduction in engine load from the wide open throttle condition.
Fox005I did a search first, that being said does anyone have the lenght and diameter for complete line replacement(78-351) info like the dress up kit including the long modulator line? I have seen it for later models in another thread. No flaming if you have the link that would be appreciated and I will gladly share pics when im done.
Here is a shot of my engine and where mine are:
You have any pics of the hoses that hook up to the PCV, crankcase filter, and air cleaner. I'm trying to figure out where my crankcase filter hose hooks up. I have an elbow on my passenger side valve cover but can't figure out how to connect it to the air cleaner. My PCV is in the oil filler/breather on the driver's side and it has a hose hooked to the base of the carb. Any pics would be helpful, thanks.