0
First rule out ignition misfire and fuel. Use a timing light to ensure all plugs are firing. Check comp in all cylinders to ensure not a base engine issue. Check fp with a guage. Now check vac w./ guage to see if you do have a leak it will be low/steady if you do or going back and forth. Check all rubber hoses that go to your intake with a can of carb cleaner or starting fluid. You should only have a handfull. Brake booster, pcv, ac, fuel purge, etc. Spray them & When you hit the leak, rpm will rise. Cheack also gaskets surrounding intake, Iac & throttle body. Check your pcv valve and test brake booster as well. those are other possibles.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Were to find the vacumm leak?
spray around your vacum hoses with ether.
Why does my 91 Chevy pickup 350 motor not idle down?
vacumm leak problem.
1995 GMC Van Any idea why motor intermittently dies when heater turned on?
there is a vacumm leak .
What makes a 2008 f250 to lose power at 40mph?
Im haveing the same issue. Im assuming it is a vacumm leak causing it.
Why does front drive shaft rotate on Chevy blazer 4x4 2002 when elctronic switch not engaged?
there could be more than one factor it sounds like the actuator is bad or if your blazer has partial vacumm control then you could have a vacumm leak
Your heater in your 93 blazer does not work right fan runs but not much air comes out the vents changed the duct work doors seem to be working but dont blow air what can you do?
If it has the vacumm operated climate control check for a vacumm leak under the dash. Also check for proper operation of the vacumm valves operating the doors. Usually if the system breaks the control will default to the defrost position and vacumm leaks are a common cause.
What can't you get conduction or convection in?
vacuum :3 Sister Tree
What does the error code p0455 mean for a 2002 Mazda protege 5?
P0455 code for mazda Protede... Evaporative Emission System Leak Detected (gross leak/ no flow)
Why would a 1998 Honda foreman 4 wheeler take its time to come back to idle after hitting the throttleno matter how adjusted and i have clean and rebuilt the carbans still no luck?
Vacumm leak
How do you clear drain holes on a Mazda mx3 sunroof?
I found the answer here: http://www.mazdaforum.com/forum/mazda-mx-3-mazda-mx-6-25/water-leak-17642/
How do stop a leak around the timing belt on a 1994 Mazda 929?
Replace the cam seal.
What is the cause of high idle on a Mazda B2300 truck 1994?
A vacuum leak is one possibility.
