How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask rpmdiag Your Own Question
rpmdiag, Tech and Instructor
Category: Ford
Satisfied Customers: 8059
Experience:  Since 1975
Type Your Ford Question Here...
rpmdiag is online now
A new question is answered every 9 seconds

I have issue with e150 1992 5.0l surging at idle then

Customer Question

i have issue with e150 1992 5.0l surging at idle then killing it self and gets bad gas mileage. White smoke out tail pipe. I replaced fuel filter, injectors, spark plugs, cleaned cap, new fuel pressure regulator. It runs better (the injectors were definitely leaking) but the surging at idle is there still. I checked all the vacuum lines, got a new grommet for PCV and can not see anything else wrong. You have any idea?
Submitted: 10 months ago.
Category: Ford
Expert:  rpmdiag replied 10 months ago.

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

Expert:  rpmdiag replied 10 months ago.

It sounds like you have a blown head gasket. You need to do a compression/cylinder leak down test to confirm this. Coolant is getting into one or more of your cylinders.

Thanks, Ron

Customer: replied 10 months ago.
The vehicle does not overheat at all. I will do the test and see.
Expert:  rpmdiag replied 10 months ago.

It doesn't have to overheat, I'm trying to help you save your motor.

Thanks again and please remember to rate me 5 stars and keep this link in case you need me again later on.


Expert:  rpmdiag replied 10 months ago.

Our goal here is to assist you in the repair of your vehicle by
supplying you with well educated information. We may not always
have the exact fix you wanted to hear, but our job is to get you on
the right track, which we always do. We can’t hear, see, smell or
touch your vehicle from where we’re at, so your understanding of
that is greatly appreciated. There are no magical or miraculous
answers, but we do our best to guide you in the right direction.

Thanks, Ron

Expert:  rpmdiag replied 10 months ago.

If you are satisfied with my answer, I would greatly appreciate a 5
star rating now and I will still assist you after you have rated me
too if another question pops up. I don’t get credit for helping you
until you rate me.
Thanks again, Ron