on any high altitude car, this one is 80hp and now. hp, and now has low compression (90% of normal)
needs all the best fuel and best spark, it can get.
the compression is low up there.
The FPR must work or it will flood. at sea level we run more PSI fuel, so if the FPR is bad, and runs high pressure engine will flood.
This car the FPR is altitude only device. unlike the MPI engine.
when you gun the engine, TBI , fuel pressure holds. (unlike the MPI engine)
there is a pump stall test. or shunt tests, this shows a weak fuel pump.
there are other tests. the fuel pressure leak, down test. injector leaks.
i do fuel tests last (unless i have hard proof now its bad)
1: engine first, compressing, and vacuum check for steady 20"HG vacuum pull, not bouncing at idle./
2: spark tests, and timing, for sure at stall. for sure.
3: last fueling,, this is the big job, lots of tests. but I must discount the above,first, with tests. cant burn fuel with bad spark or a bad engine. cant. will , not and make full power.
say the spark test passes stalled.
and you see sparks dry
we remove the air horn from top TBI
and person 2 , cranks, you look at injector, its in plane site, and see it spray or not. ? if not, fuel pump off line. or ECU sees code 41, or 42 and cuts fuel, as they ALL DO.
here is what TBI looks, like even cranking , does the same thing.
this is double TBI
https://www.youtube.com/watch?feature=pl...eHgh8#t=30
needs all the best fuel and best spark, it can get.
the compression is low up there.
The FPR must work or it will flood. at sea level we run more PSI fuel, so if the FPR is bad, and runs high pressure engine will flood.
This car the FPR is altitude only device. unlike the MPI engine.
when you gun the engine, TBI , fuel pressure holds. (unlike the MPI engine)
there is a pump stall test. or shunt tests, this shows a weak fuel pump.
there are other tests. the fuel pressure leak, down test. injector leaks.
i do fuel tests last (unless i have hard proof now its bad)
1: engine first, compressing, and vacuum check for steady 20"HG vacuum pull, not bouncing at idle./
2: spark tests, and timing, for sure at stall. for sure.
3: last fueling,, this is the big job, lots of tests. but I must discount the above,first, with tests. cant burn fuel with bad spark or a bad engine. cant. will , not and make full power.
say the spark test passes stalled.
and you see sparks dry
we remove the air horn from top TBI
and person 2 , cranks, you look at injector, its in plane site, and see it spray or not. ? if not, fuel pump off line. or ECU sees code 41, or 42 and cuts fuel, as they ALL DO.
here is what TBI looks, like even cranking , does the same thing.
this is double TBI
https://www.youtube.com/watch?feature=pl...eHgh8#t=30
http://www.fixkick.com