gas coming from exhaust manifold

yesterday morning i start up my 91 b2200 get ready for work it idle rough and white smoke non stop and today after work i start it up again (rough idle ) i notice a fluid coming out from the exhaust manifold at the collector wet down the pipe can someone please tell me what's wrong with it.

please help ,

othie

My guess here is that the air/fuel mixture isn't burining in one of the cylinders, and the fuel that is coming out is because of such. Pics would help here. First thing that I would check is to see if all the spark plug wires are connected. Also, check the condition of the spark plugs, let us know if one looks any different than the other.

More advance testing you could do, perform a compression check on your vehicle, both dry and wet. Fuel lines don't typically run past the exhaust side on our trucks so I doubt that there is any fuel leakage from any lines landing on your exhaust manifold.

We do need more information though, is it a 5 spd or an automatic?

91 b2200 134k mi.5 spd. truck ran good the day before i did complete tune up 7 mths ago i don't think its fuel i think its coolant but its smell like gas and the engine sound like its mis-firing man i hope is not head gasket leak

In my experience with burning coolant it has a very specific smell kinda like burnt candy (but really nasty!) even the thought of it makes my stomach hurt... Idk man and maybe I had a specific case but I don't think it would smell like gas...

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In my experience with burning coolant it has a very specific smell kinda like burnt candy (but really nasty!) even the thought of it makes my stomach hurt... Idk man and maybe I had a specific case but I don't think it would smell like gas...

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I doubt it is gas.I would do a check of these items.Check your oil cap for a goo substance,and oil level if high.Next is your radiator coolant and overflow tank low.Coolant has a sweet smell,and if burnt off kind of like bad candy.I would brake clean the hg below the exh manifold and double check.Unless I missed something may others add/corr me.I would run your finger under the exh man and smell and or look really good.

start the truck, put you hand in front of the exhaust. Leave it for about 5 seconds. Is you hand wet? what does it smell like? Repeat with someone reving the truck.

My sis's car (04-05 sentra) had a bad head gasket. Could barely see any smoke (looked like normal start up vapor), but it would keep eating coolant. I could only tell that it was from the head gasket when I had someone rev the car up, at which point the exhaust pipe would become wet, but at idle it would dry faster than the antifreeze would get it wet.

With a bad head gasket mine didn't smoke more than was *normal* since I bought it. Until I really had it go out on two cylinders--then it filled a parkinglot with white smoke just trying to start.

start up the truck again earlier it is not coolant it is fuel check the oil and coolant no milky or chocolate stuff . could it have to do with fuel pump, injectors,?

well i try to figure out what's wrong with the truck i was told its the injectors so i check and found out that #2 and #4 was bad so i figure switch injectors 2 to 1 and 3 to 4 and #2 and #4 is still badi thought it was the harness so i check the ecu my ecu is burnt now im looking for an ecu .i try to explain the best i can hope is not too confusing

thanks ,
othie oth

most of the time when there is an issue with the ecu, it is a bad capacitor or two that has eaten into the circuit board. Most of the time you can clean the board and replace the capacitors at fault to restore the ecu to a working condition.
There is also a company out there that can repair your ecu. I don't have the contact information at the moment, I think that there is a member over on mazdatrucking.com that can stet you up with this.