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The Patient: 22 y/o Total loss Race Hawk. Complains of intermittent starting/ can't stay running issues x 2 days
Vitals: 700 kit, stage 2 heads, jetted, Hiperform subframe, M4 exhaust
Patient states that has been in good health and "running great!" until a left sided lowside in the rain 2 days ago. Low speed lowside in turn 2 while practicing for upcoming race without known signifigant injury "just some scrapes and bruises"
"Flooded" initially but after sitting for a bit, "fired right up". Rested until race, started and warmed up ok, shut down, went to start again and wouldn't fire. Turned over but would not catch. Push starting yielded a start but would not stay running for race, entered 1 lap down, did 1 lap and quit.
Patient noted "seems to happen more when I lean left", Noted spike in RPM prior to quitting.
Exam: Patient appears well nourished, with an athletic build and younger than their stated age, in no apparent distress. Review of system reveals some abrasions noted on left side, Normal fuel delivery, Battery within normal limits and holding charge, all fuses intact. Positive spark to rear cylinder but apparent intermittent spark to front cylinder, Continuity of wires/ coil checked and are within normal limits although intermittent spark is found in the right plug. Spark unit is checked and is also within normal limits. Front coil is excised under local anestetic for examination. Will send to lab for further testing.
Assesment: Possible bad coil/wire/battery/regulator rectifier/short. Will consult with other more knowledgeable folks and narrow down these possiblities.
Plan: Will admit patient to garage and run complete diagnostic of all systems, starting with electrical. Will do a front coil transplant with known working coil to replace the excised one. Cannot rule out other causes.
Will ask for guidance from more knowledgable folks.
Lil Help?
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Originally Posted by Pittenger5
