Can anyone tell me why my Landcruiser has no power under 2000rpm.. no smoke from motor or turbo, turbo spinning freely, airfilter is clean, injectors are in excellent condition. At revs and driving its got full power! super smooth at idle, starts and runs perfect except this low power part, to the point when if I put the ramps under the front wheels it wont go up enven these without a run up. It seems to have gotten worse over the last few hours of driving. would love any help anyone can give! :)
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black smoke is over fuel and in a diesel with a turbo that indicates that
1 the turbo variable vanes are not adjusting to low rpm
2- the turbo turbine wheel is not spinning up
3-the intercooler or hoses are leaking boost air
4-- bad injectors -- squirting and not atomizing
black smoke is over fueling and although the turbo appears to spin ok the vale variation actuator may not be operating correctly
there are vanes in the exhaust turbine housing that are altered to increase the exhaust gas flow onto the turbine blades for quicker acceleration and these vanes are operated by a vacuum actuator and rod by a sensor
the vanes are subject to extreme heat and can rust stuck open or the hose gets hard and cracks
s not allowing the vanes to work
I would be concentrating in this area before the EGR valve
run the fault codes as well to get a better idea of the possible fault as some systems only put the light on for extreme conditions in engine and transmission
well it runs,,,,,
low power on a diesel is
1: low compression
2: bad fueling
#2 can take forever to find, if you dont know what engine it is or what fuel system was used.. no country stated, so cant guess
read the wiki on land cruiser and see what you have.
we dont know.
black smoke is an indication of not enough air for the fuel setting
that is from either a air leak in the intercooler or split pipes from the turbo to the manufold
turbo units will have up/down movement as there is clearance in the bushes but as indications are that the turbine is not spinning free enough I would be having the turbo serviced or replaced
Perform an ODBII scan and look for a Mass Air Flow sensor fault. The pop you heard was most likely a back fire and could have damaged the MAF sensor. A bad MAF sensor can result in overly rich (black smoke) fuel mapping. Pull the intake duct off of the turbo and see if the impellor will spin freely by turning it with your finger. Do you have boost pressure on the dash gauge?