Chasing Lean Issue
#1
Chasing Lean Issue
I've been doing some searching in regard to my CEL. 0171 & 0174. It appears that I have a vacum leak. I have two questions. First how do I check the intake manifold gaskets? I keep seeing this mentioned but I'm not sure how to check. Second: I've heard a strange whistling sound that sounds like its coming from the passenger side of the truck. Maybe under the dash... Are there any likely vac lines or motors under the dash that are common problems? I'd like a general idea before I start tearing **** apart. Thanks.
#3
That's been cleaned. I cleaned it when I removed the K&N filter. Thanks for the suggestion.
I was poking around (literally) under the hood yesterday and stuck my finger through a vacuum hose. I replaced it and cleared the code. If the CEL doesn't come back on the way home from work I'll call it good as far as this issue.
I was poking around (literally) under the hood yesterday and stuck my finger through a vacuum hose. I replaced it and cleared the code. If the CEL doesn't come back on the way home from work I'll call it good as far as this issue.
#4
RF Veteran
iTrader: (1)
The Ford's post -2000 Vacuum lines have a 10 year life span, common issue.
There are a few ways to check gaskets.
All require engine to be idling.
1. Can of Quick Start(ether) or Carb Cleaner, spray it around gaskets and listen for RPM change, downside is that this stuff is flammable, which is the point, so cold engine is best.
2. Propane bottle with a hose, run hose around gaskets and listen for RPM change, less flammable but still need to be careful.
3. Spray bottle of soapy water, spray around gasket areas listen for change in RPM.
Lower intake, upper intake and throttle body are common leak points.
On MAF sensor systems ANY air coming in that doesn't pass thru the MAF sensor can throw off the fuel/air mix, so the large air tube needs to be air tight.
There are a few ways to check gaskets.
All require engine to be idling.
1. Can of Quick Start(ether) or Carb Cleaner, spray it around gaskets and listen for RPM change, downside is that this stuff is flammable, which is the point, so cold engine is best.
2. Propane bottle with a hose, run hose around gaskets and listen for RPM change, less flammable but still need to be careful.
3. Spray bottle of soapy water, spray around gasket areas listen for change in RPM.
Lower intake, upper intake and throttle body are common leak points.
On MAF sensor systems ANY air coming in that doesn't pass thru the MAF sensor can throw off the fuel/air mix, so the large air tube needs to be air tight.
#5
The Ford's post -2000 Vacuum lines have a 10 year life span, common issue.
There are a few ways to check gaskets.
All require engine to be idling.
1. Can of Quick Start(ether) or Carb Cleaner, spray it around gaskets and listen for RPM change, downside is that this stuff is flammable, which is the point, so cold engine is best.
2. Propane bottle with a hose, run hose around gaskets and listen for RPM change, less flammable but still need to be careful.
3. Spray bottle of soapy water, spray around gasket areas listen for change in RPM.
Lower intake, upper intake and throttle body are common leak points.
On MAF sensor systems ANY air coming in that doesn't pass thru the MAF sensor can throw off the fuel/air mix, so the large air tube needs to be air tight.
There are a few ways to check gaskets.
All require engine to be idling.
1. Can of Quick Start(ether) or Carb Cleaner, spray it around gaskets and listen for RPM change, downside is that this stuff is flammable, which is the point, so cold engine is best.
2. Propane bottle with a hose, run hose around gaskets and listen for RPM change, less flammable but still need to be careful.
3. Spray bottle of soapy water, spray around gasket areas listen for change in RPM.
Lower intake, upper intake and throttle body are common leak points.
On MAF sensor systems ANY air coming in that doesn't pass thru the MAF sensor can throw off the fuel/air mix, so the large air tube needs to be air tight.
#6
RF Veteran
iTrader: (1)
#8
Thread
Thread Starter
Forum
Replies
Last Post
Huh?
General Ford Ranger Discussion
13
02-03-2006 09:23 AM