Ford Repair Questions? Ask a Mechanic for Answers ASAP
Hello and good evening. THere are no engine vacuum diagrams in my info system. What are you noticing that leads to a vacuum leak?
Your JA Expert,
it sounds like it coming from left underneath
2500 rpms is max then it sounds like its flooding out smells very rich
and the noise get louder as engine rpms go up
That is very possible. Under truck is the vacuum reservoir. It very well may be under the left front fender. Remove the inner fender or liner and see if it is there. It will be a round cannister. The vacuum lines connect to it. If the lines are broken or the tank is cracked, you will have a major leak. Also, look closely at the rubber vacuum tees that are located on the back of the intake and valve covers. They tend to dryout, crack, or collapse and cause a major vacuum leak. Here is a picture of the cannister.
i sprayed carb cleaner all over the lines it didnt change
the sound is coming from passenger side not driver
its a high pitch whistle
im lost now
It is common to have internal vacuum leaks at the upper to lower intake manifold gasket. Also, since you have a whistle, see if the Idle Air Control motor is stuck open, which will simulate a vacuum leak and raise the idle way up. It is held on with 2 bolts. Remove them and block the passages and start the truck. See if the idle is still high or if it now low. Here is a picture, so you know what it looks like.
500rpm with out
put it back went down road and had power then lost it again
and where is the tranny fill tube
it didnt bog this time i have 65psi
cant drive it when cold its all fine but after heating up i loose rpms
and pressure stayed the same