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SOHC - 2.3L & 2.5L Lima Engines Discussions and Topics specific to the Lima 4 cylinder engines

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  #26  
Old 12-17-2009
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I thought that was the EGR Vacuum Regulator (EVR) Solenoid as shown HERE in this Vacuum Diagram. If its not then i never found that solenoid when i was checking for vacuum leaks last week.
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  #27  
Old 12-17-2009
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Quote:
Originally Posted by dezel29 View Post
how do u check that on these engines ?
Im sorry I cant answer this question other then saying that the guy that fixed mine has been a mechanic for years and knows where the valves should be when the #1 cylinder is at TDC. He did it by eye something i would have no clue how to do.
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  #28  
Old 12-17-2009
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Quote:
Originally Posted by Dragonclaw View Post
I thought that was the EGR Vacuum Regulator (EVR) Solenoid as shown HERE in this Vacuum Diagram. If its not then i never found that solenoid when i was checking for vacuum leaks last week.
maybe so.... so if there is no MAF in the intake there should be a MAP from what I understand??? am I missing something then?
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  #29  
Old 12-17-2009
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you should have a MAF i see the wires running to it in one of the photos, on your truck just like on mine it is sort of "hidden" in the plastic top half of the air filter box. Take it off like you where gonna change the filter and look inside the part running to the engine and you should see it. You should also be able to see the wires that run to it running inside of the part I'm talking about. Also from your pics (unless you took it off to take the pics) it seems you are missing the vacuum tube that runs from the air intake (rubber) hose to the top of the Valve cover. Now i am in no way sure what that hose does exactly but i know i had a 1985 Pontiac Sunbird and ran it w/o that hose hooked up and the engine blew from lack of oil getting to various parts.
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  #30  
Old 12-18-2009
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k found the MAF, hidden little bastard! I was looking for one similar to what my dads 93 has (aluminum sensor assy in the intake tube). I tried unplugging it and the truck dies so I believe it is working fine. I looked inside it and its clean as ever but I cleaned it out anyways... it runs a little smoother at idle but still wont rev up past about 3500rpm. I am going to go down and get plugs, wires, fuel filters and some injector cleaner and see if any of that helps... anyone have any ideas on why it wont rev?
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  #31  
Old 12-18-2009
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replace the line thats missing going from the valve cover to the intake track. i'd be supprised if you haven't destroyed the motor allready. it's getting a lot of unfiltered and unmetered air through that hole. if nothing else, put a plug in that hole and the truck will probably run a lot better. The MAF dosen't know all that air is going into the motor and is having a hard time getting the a/f mixture right. probably running super lean too. BIG problem.

Also can't tell what that hose sitting atop the valve cover with what looks like a small fuel filter is. I'm not sure what it is or where it goes, but that dosen't look right.

Last edited by Bryan22; 12-18-2009 at 03:45 PM.
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  #32  
Old 12-18-2009
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I have already hooked that hose in the intake back up and it makes little if any difference. the hose on top the valve cover is the PCV valve which has also been fixed already. It is running much better than when I got it now but still wont rev past 3500 and has a rough idle although not rough enough to make the motor shake. The motor is not destroyed it does not smoke or make any noise at all.
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  #33  
Old 12-18-2009
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Still sounds a lot like how my engine acted when it was off time. Have you taken the rubber plug off the top of your timing cover and checked the timing. Now on mine this meant nothing as ford marked mine wrong in the factory BUT maybe yours might be right so its worth a check.

If you need more info on how to check it ill be happy to help ya as I've had way to much experience with the timing on these engines.
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  #34  
Old 12-18-2009
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could be a fuel pump on it';s way out. get a fuel pressure guage and hook it up to the schrader valve on the fuel rail. then peg the throttle and see if the pressure stays up or falls off. when was the last time you changed the fuel filter?

Also like dragon said, the timing is real easy to check so you should have a look just for peice of mind.
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  #35  
Old 12-18-2009
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I'm throwing this on here just in case you need it as i typed it out for some one esle and you may need it so why type it again.

Earlier in this topic I said i didn't know how to check the timing. I do in fact know how to check the timing, the reason i wrote i didn't is because i was getting my forums mixed up and thought i was on TRS for a minute.

On there I have made it known that the factory timing marks on my truck are wrong, but just realized that there is no way you could know that as this is a different forum.

Any way to check the timing, assuming your marks are correct, follow these steps.

1. Pull the top rubber plug out of the timing belt cover.
2. Locate the timing mark on your main drive pulley (harmonic balancer) and line it up with TDC on the timing meter located at the bottom of the timing belt cover.
3. Look in the Hole left by the removal of the rubber plug.
4. You should see a arrow made into the back of the plastic cover which is used to mark the timing.
5 the cam shaft pulley has a notch on it that is supposed to line up with that arrow.

If when you first look in there the notch is not there don't panic as the engine may be on the exhaust stroke making the mark 180 degrees off. just turn your main drive pulley (harmonic balancer) one more turn and then look.

If you still do not see it lining up that could mean your timing has slipped, or that the Balancer has sliped. You should look at the rear of the cam shaft pulley and see where the notch is, its real easy to see. Then line the notch up with the arrow inside the cover. Take a look at the timing ruler and if it says 10 degrees BTDC ur fine as that is where its actually supposed to be. If it says anything else and your having power problems you might want to get it checked by a mechanic.

Also a while back i paid for a timing diagram because i was so fed up with it and it said i could link it to friends so try clicking HERE. If it doesnt show up and you want the info let me know and ill just copy the images off the page and put them on here.

Last edited by Dragonclaw; 12-18-2009 at 05:17 PM. Reason: added info
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  #36  
Old 12-18-2009
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Quote:
Originally Posted by Bryan22 View Post
could be a fuel pump on it';s way out. get a fuel pressure guage and hook it up to the schrader valve on the fuel rail. then peg the throttle and see if the pressure stays up or falls off. when was the last time you changed the fuel filter?

Also like dragon said, the timing is real easy to check so you should have a look just for peice of mind.
I have yet to change the fuel filter I have only had the truck a couple weeks. I have a friend bringing me a fuel pressure gauge tonight to check the fuel pressure... thanks for all the help man
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  #37  
Old 12-19-2009
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we checked the fuel pressure last night and its about 38psi at idle and when you give ti throttle it drops to about 30 I am going to start by changing the fuel filter.
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  #38  
Old 12-19-2009
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Normal Fuel pressure for that engine is 30-40 PSI so your actually doing about right in that department.
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  #39  
Old 12-20-2009
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actually idle should be 35-45 with FPR vaccum line disconnected and 25-35 with it connected. un hook the FPR and see if the pressure changed or not.

Have you checked the timing marks yet as dragon suggested?

This is kind of curious. Not sure if you should continue on the fuel side or start looking somewhere else. Might check to see if the spark timing is advancing.also. But start by checking the timing belt marks and get back to us.

Also a question.. Has the truck been doing this since you got it or is it a problem that just started?
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  #40  
Old 12-20-2009
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Quote:
Originally Posted by Bryan22 View Post
actually idle should be 35-45 with FPR vaccum line disconnected and 25-35 with it connected. un hook the FPR and see if the pressure changed or not.

Have you checked the timing marks yet as dragon suggested?

This is kind of curious. Not sure if you should continue on the fuel side or start looking somewhere else. Might check to see if the spark timing is advancing.also. But start by checking the timing belt marks and get back to us.

Also a question.. Has the truck been doing this since you got it or is it a problem that just started?
the truck was doing this when I got it. I will head out in a few and check the timing marks. It just really does not seem like a timing issue to me as it will run smooth at about 2000... it is all fine until you land on the throttle wide open then it falls on its face... I am pretty much lost with the damn thing! I will go out and check the timing and report back
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  #41  
Old 12-20-2009
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My truck ran fine threw all RPM ranges, and idled like a dream even with the timing off. It just had no power.

The mark is kind of hard to see so take your time, we had one of those video cameras on a flex cord to use when i was checking mine so i was lucky.

Edit: Also the indention in the Cam gear is NOT the mark. There is an arrow imprinted on the metal itself. I made this mistake myself, so maybe the previous owner changed the belt and did the same thing, because you problem sounds EXACTLY like what i had going on. I saw a good timing guide on a ranger forum yesterday but as i read 3 different forums ill have to find it so give me a few minutes.

Edit: Found IT
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  #42  
Old 12-21-2009
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sweet thanks man I am going to check this out on my lunch and maybe this will solve it! I sure hope so....
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