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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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  #1  
Old 12-16-2010
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smoking can't figure it out

2.3 in an 88 ranger
It runs rough and smokes gray pretty heavy;
then it will smooth out for a minute, the smoke will clear up and the vacuum gauge will read normal.
Then it goes back to running rough and smoking.
My check engine light doesn't work but when I pull the codes with an analog meter ( I let a buddy use my scanner, now he is nowhere to be found) the best I can tell all it's showing is EGR which is disconnected because I added a header.

Wet plugs, seems like # 1 is the wettest
rough idle
fuel in oil, a little over full line
good compression
good fpr on the rail
good fuel pressure
fuel pressure leaks to 0 in about 5 min (pretty sure its the pump I'll know in a day or two)
vacuum gauge flutters around 12-14
I swapped out the upper/lower intake, fuel rail, throttle body from an extra motor I have. Nothing changed
New fuel filter, plugs, wires, cap, o2 sensor

This truck is my toy/woods truck but I'm about to try and sell my house and it really doesn't add to the aesthetics of the place all tore down in my garage.

Any advice would be much appreciated
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  #2  
Old 12-16-2010
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Check the timing thats about all i can think of right now.
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  #3  
Old 12-17-2010
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you could pull the head and check your valves, my dads truck wasn't smoking but it was running rough, and we took it to a shop and one of the valves have fallen, we think when he got the head replaced that let dirt fall on it which damaged the valve and the continued use made it somehow fall, andyways it was cheeper and easier to just replace the engine, you could check your gasket, and if you timing is bad then you have a computer issue since the timing is controled by a computer,
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Old 12-17-2010
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Quote:
Originally Posted by 87xlt View Post
Check the timing thats about all i can think of right now.
You may be close . The timing belt may be stretched and the tensioner froze .
Pull the timing belt cover off and check how tight the belt is.
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Old 12-17-2010
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true def check the timing belt, that could possiby be a sing of the timing belt being on its last lege, i know mine burt really rich before i replaced the timing belt
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Old 12-17-2010
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  #7  
Old 12-17-2010
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Thanks for the replies
I will pull the timing cover tonight.

It looks like everything is pointing to timing.

While I was looking around for the spout I noticed a white (or maybe it was yellow at one time) wire coming out of the loom at the tfi. It is bare and by the grime it looks to have been that way for some time. I'll post a pic when I get home tonight because I still haven't found my spout jumper.

Thanks again
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  #8  
Old 12-17-2010
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I pulled the access plug on the timing cover and all the marks line up.

I then pulled the cap of my distributor.
If I'm at TDC should my rotor button be pointing at the #1 piston wire?
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  #9  
Old 12-18-2010
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ok I found the spout, unhooked it and set timing to 10 BTDC.
Still ran kind of rough and smoked gray.
Vacuum gauge was fluttering steady at 10

I hooked the spout back up and no change
The timing should have advanced so what now?
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  #10  
Old 12-19-2010
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Replaced the pump in the tank now it runs great
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  #11  
Old 12-20-2010
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thats good you figured it out, pretty interesting that a bad fuel pump would make it smoke
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  #12  
Old 12-20-2010
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I know, I knew my pump wasn't holding pressure but I didn't think it would cause my primary symptoms.
That's why I kept focusing in timing.
I couldn't get anywhere with the timing so to give my brain a break I changed the pump and whatya know fixed truck.

The thing I don't quite understand is why my timing wasn't advancing I guess it went into limp mode.
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  #13  
Old 12-20-2010
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yeah possibly, hmm still boggles my mind the weird things that happen when things on vehicles go wrong
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  #14  
Old 12-22-2010
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I've got the rough-running and smoking at start up now. Just had the T-valve in the heater/water hose replaced, but I don't think this matters. Any way it smooths out in a few minutes and doesn't smoke anymore. (wondering if it is really steam and not smoke.. very cold outside)
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  #15  
Old 12-23-2010
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true yeha and if its leaking colant thats steaming then it smells like **** so you might think its smoke
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