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Still starting problems

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Old Oct 16, 2006 | 08:16 AM
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Red face Still starting problems

<HR style="COLOR: #ffffff" SIZE=1> <!-- / icon and title --><!-- message -->

93 F150, 302, automatic, 189,000 miles.

I had problems and codes. Got all of the codes cleared by fixing the problems.
Still I have a problem on the first start of the day. The only way I can get it to start is to cover the throttle body while cranking and it finally hits and starts.
It is getting fire. I have changed the plugs and checked the fuel pressure, all okay. Ran fuel pressure test on both tanks and they are okay.
I am pulling my hair out (both of them).

Any suggestions????????

Oh yeah the only code i am gettin is 11 which means all is good.........

And also once I get it going, it starts the rest of the day???
 
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Old Oct 16, 2006 | 08:30 AM
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From: Easton,Ks
You have a vacuum leak and it could be:
1. EGR Valve open
2. Intake gaskets
3. Vacuum or vapor hose off or broken
4. PCV valve bad with dip stick not sealing
 
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Old Oct 16, 2006 | 09:38 AM
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I checked for vacuum leaks with starting fluid and visually. any other suggestions on how to check for that?

Also some of the lines are brittle and i have replaced them with rubber instead of the hard plastic original. is there someplace reasonable to get the replacement hoses already precut, i will try replacing them all and see if that works. it driving me crazier.
THANKS
 
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Old Oct 16, 2006 | 10:51 AM
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also forgot to mention, have replaced the pcv valve and checked and cleaned egr...could it be some sort of problem with injectors?? is there an easy way to clean them or check them?? not that up on ejectors but easily taught when it saves me money...
 
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Old Oct 16, 2006 | 10:56 AM
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Some of my sm. black plastic christmas tree lines on the intake, and the ones comming out of the HVAC stuff have crumbled as the plastic gets brittle. I took sm. diameter rubber air line hose, 1/8 or 14 inch and cut up to the good plastic line and slid the rubber line over to replace the damaged/old part. It has worked fine.
 
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Old Oct 17, 2006 | 07:19 AM
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where is a good place to get the replacement vacuum hoses that are color coded?
 
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Old Oct 17, 2006 | 08:25 AM
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From: Easton,Ks
Sometimes over looked for a big vacuum leak is a ruptured brake booster diaphragm.
Also bad heater/AC controls in the cab can be a vacuum leak too, just had one of these yesterday. Did not stop it from starting but it did run rough.
 

Last edited by subford; Oct 17, 2006 at 08:29 AM.
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Old Oct 31, 2006 | 08:53 AM
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Have replaced EGR, checked everywhere i can find for leaks. The only thing i haven't done is taken the intake off and checked it but it hasn't been too long since i had it off and put on a new gasket when i put it back on. any ideas on how to check for intake leak?
 
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Old Oct 31, 2006 | 09:18 AM
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do the propane test. find something like those small torches that you spin on top of a coleman propane tank, and rig it so that it doesnt fire,but instead just spits out gas. then, with your engine running, take the gas and run it down along the gasket line that you're wanting to check. if the gasket leaks, the propane will get sucked in, and the engine will rev up a little.
 
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Old Nov 1, 2006 | 07:35 PM
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Okay today i pulled the intake plenum off.

SInce my cats are gone i took the dangling pipe off (thermactor and crossover) plugged it. Checked all vacuum lines. cleaned everything. New gaskets put it all back together and still same problem. NO START......so does anybody have any idearsssssssssssss
 
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Old Nov 1, 2006 | 09:25 PM
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From: Easton,Ks
Originally Posted by acdc
Okay today i pulled the intake plenum off.

SInce my cats are gone i took the dangling pipe off (thermactor and crossover) plugged it. Checked all vacuum lines. cleaned everything. New gaskets put it all back together and still same problem. NO START......so does anybody have any idearsssssssssssss
How did you check the fuel pressure?
 
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Old Nov 2, 2006 | 06:06 AM
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checked it with the key off, key on, engine running, both tanks, don't remember exactly but it was between 35 and 40. problem has been deteriorating. could get it started but now it won't
 
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Old Nov 2, 2006 | 06:07 AM
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what about a cam or crank position sensor, does it have one?
and where is it?
 
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Old Nov 2, 2006 | 06:24 AM
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From: Easton,Ks
Originally Posted by acdc
what about a cam or crank position sensor, does it have one?
and where is it?
The cam sensor is inside the distributor.
 
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Old Nov 2, 2006 | 06:32 AM
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could this be a problem?
 
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