Running way too rich... Need your input...
03-29-06, 04:14 PM
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Running way too rich... Need your input...
Hey everybody!
In the process of rebuilding the engine i saw what i smelled before - the results of running way too rich for a long time... a thick layer of carbon everywhere...
well here's other simptoms: gasoline smell from the exhaust, high gasoline mileage (13-14 MPG or 18 liters per 100 km of any style city driving), relatively low power and rough idle...
Here's what i already tried to fix the problem:
*) replaced the water thermo sensor (the one on the water pump)
*) tested AFM with a DMM (it is withing specs) and even try to replace it with a different one - still the same...
*) replaced o2 sensor with a Bosch one
*) cleaned fuel injectors
*) replaced the vacuum hoses with a silicone ones
*) tuned TPS by the FSM
*) checked for error codes from ECU - found none
*) ACV is blocked off
*) Ignition re-setted
actually i'm running out of new ideas what to look for... don't wanna lay a new layer of carbon on a newly rebuilt engine, so please help me out with this...
Thanks in advance!
In the process of rebuilding the engine i saw what i smelled before - the results of running way too rich for a long time... a thick layer of carbon everywhere...
well here's other simptoms: gasoline smell from the exhaust, high gasoline mileage (13-14 MPG or 18 liters per 100 km of any style city driving), relatively low power and rough idle...
Here's what i already tried to fix the problem:
*) replaced the water thermo sensor (the one on the water pump)
*) tested AFM with a DMM (it is withing specs) and even try to replace it with a different one - still the same...
*) replaced o2 sensor with a Bosch one
*) cleaned fuel injectors
*) replaced the vacuum hoses with a silicone ones
*) tuned TPS by the FSM
*) checked for error codes from ECU - found none
*) ACV is blocked off
*) Ignition re-setted
actually i'm running out of new ideas what to look for... don't wanna lay a new layer of carbon on a newly rebuilt engine, so please help me out with this...
Thanks in advance!
Last edited by Chief_MC; 03-29-06 at 04:16 PM.
03-31-06, 06:00 PM
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Yes!!! And that is not even a complete list... As i did many small things like replaced a fuel pump and FPR... i was thinking that it is possible that the fuel pressure is not within spec... still the same after that...
Is that could have something to do with a tired motor? I started my rebuild because it has more than 160 k miles and the compression was poor... But in my opinion barely this is not related things...
Is that could have something to do with a tired motor? I started my rebuild because it has more than 160 k miles and the compression was poor... But in my opinion barely this is not related things...
03-31-06, 06:15 PM
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dont worry i just adjusted my idle do to the ampage when light and fan are going at the same time. All of a sudden I smell gas to, but I lean her out abit witht the adjustor thingy for lean/rich. I'll see if that works. Oh by the way I only get like 180 miles per tank.
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04-01-06, 07:46 AM
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I replaced it twice... As i said i forgot to mention some minor things... Actually i've replaced both: hi-pres side and in-tank lo-pressure one...
04-04-06, 02:56 AM
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Hey Higgi!
I haven't measured compression before the rebuild, but from what i've seen inside of the engine, i think it was low.
Spark was good and haven't found any vacuum leaks.
You think low compression could be related to high mileage?
I haven't measured compression before the rebuild, but from what i've seen inside of the engine, i think it was low.
Spark was good and haven't found any vacuum leaks.
You think low compression could be related to high mileage?
04-04-06, 08:28 AM
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Im glad i see somebody else is having the same probs as me...Well im not happy you are having them but rather that i might be able to find out whats wrong with mine 
. Same probs with mine to what you are saying. Everything in my motor smells like gas including the Air Filter when i went to replace it. Could it have anything to do with the ignition timing? Maybe the spark is good but what if its not sparking at the right moment?
. Same probs with mine to what you are saying. Everything in my motor smells like gas including the Air Filter when i went to replace it. Could it have anything to do with the ignition timing? Maybe the spark is good but what if its not sparking at the right moment?
04-04-06, 11:04 AM
#22
Originally Posted by driftin8ez
+1 for having the same problem. Im going to buy a crane cams hi-6 ignition box and see if that helps.
04-04-06, 12:35 PM
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I am running waaaaaaay too rich as well... will try all the suggestions in this thread.
/subscribe
Have you guys considered a leaky pulsation damper? It causes a heavy smell of raw fuel, and might even be leaking so much that it reduces mileage considerably. Since it's a massive fire hazard, I'm getting it replaced before I try to tune my motor for fuel efficiency.
/subscribe
Have you guys considered a leaky pulsation damper? It causes a heavy smell of raw fuel, and might even be leaking so much that it reduces mileage considerably. Since it's a massive fire hazard, I'm getting it replaced before I try to tune my motor for fuel efficiency.