12-08-2020, 07:28 AM
i think your engine (EFI system) goes lean driving,
and bogs
not really misfire, violent.
just lean burn loss of power.
the maf test failed, sounds like clogged injector to me from previous bad fuel. (maf test hides the clogged injectors a bet, and power can go upward)
cam timing is good. as is belt. good leakdown, so the were is normal and equal.
Exhaust also started to smoke and stink a lot (with or with out maf or both)? but no maf puts the ecu in limp mode and that sure is very rich running.
The hard part is not knowing if spark is really good or bad. (sure is at idle as it was in closed loop) but spark has to be powerful under engine loads above parked and idle.
ever look inside ECU see if those pesky caps leaked out acid? (green slime) if that happens , diagnosis is impossible. with wild symptoms.
injectors
spark coil bad.
ecu bad caps , but more rare in 1998, older version love to fail, for caps but not sure 98, now.
if they look black casing on huge cyclinder shaped caps and marked RUBIcon, they are known to fail, not blue or red or green caps just black. (or if already recapped good) not bulging not cracked or tiny valcano's on side, nor bottom rubber plug on cap not bulging down,are bad or the green slime below cap leaking (looks odd)
and bogs
not really misfire, violent.
just lean burn loss of power.
the maf test failed, sounds like clogged injector to me from previous bad fuel. (maf test hides the clogged injectors a bet, and power can go upward)
cam timing is good. as is belt. good leakdown, so the were is normal and equal.
Exhaust also started to smoke and stink a lot (with or with out maf or both)? but no maf puts the ecu in limp mode and that sure is very rich running.
The hard part is not knowing if spark is really good or bad. (sure is at idle as it was in closed loop) but spark has to be powerful under engine loads above parked and idle.
ever look inside ECU see if those pesky caps leaked out acid? (green slime) if that happens , diagnosis is impossible. with wild symptoms.
injectors
spark coil bad.
ecu bad caps , but more rare in 1998, older version love to fail, for caps but not sure 98, now.
if they look black casing on huge cyclinder shaped caps and marked RUBIcon, they are known to fail, not blue or red or green caps just black. (or if already recapped good) not bulging not cracked or tiny valcano's on side, nor bottom rubber plug on cap not bulging down,are bad or the green slime below cap leaking (looks odd)
http://www.fixkick.com