New problem. Thinking out loud here and also looking for others insight if they have run across something similar....
2017 Axys 163 3".-- 2800 miles on chassis.
1100 miles on Indy Specialty Short Rod motor
Installed new clutch, rpm around 8450 on 2' deep road 8200 skid buried and churning. Stoked.
Ripping around sled feels good. Roll out of throttle, come to a stop, find an alternative line, punch the throttle, blaaaahhhh one cylinder.
Pull plugs, PTO really dark, Mag side looks light. Install new plugs, feels like E-VES aren't opening or its on one cylinder. Flat sounding and 6000 rpm max.
Into my shop it goes..... Compression is within 2 pounds of each cylinder.
Check EVES cable (it was replaced less then 100 miles ago) cable is good. All three valve positions can be distinctly felt.
Lift rear of sled and watch EVES actuator. Start sled, E-VES goes through three position check. Warm sled up to 120 degree (2017 not 18 thermostat) Whack the throttle open sled falls on its face and refuses to pull over 6000 rpm..... E-VES stays closed or in middle position after repeated attempts.
hmmmmm..... swapped out E-VES relays for good measure
Sled still with rear elevated, roll easy into throttle. Ease past 6000 rpm, E-VES valves open around 6500, exhaust note changes and continue easing into throttle until E-VES valve opens fully and rpm hits 8000....
Put rear of sled back on the ground and back sled out of shop. Stab throttle falls on its face, sounds like valves staying closed. Ease into throttle and can slowly accelerate until valves open first at 6500 and then again around 7500... Try and ride in a normal fast throttle opening way and sled sounds flat-- hard to distinguish sound between closed valves or pulling a dead cylinder.
No codes thrown. I know there are ECU parameters that will force the valves closed under certain conditions -- but I have not seen a single code thrown or engine light illuminated.
Thinking my next step is plugging in to Digital Wrench and test firing the injectors, E-VES, fuel pump and looking for any issues. The next step after that is swapping parts out of our other Axys sleds until we stumble across the issue.... I hate throwing parts at something. I like analyzing and diagnosing, finding a smoking gun.
Anyone run across something similar?
2017 Axys 163 3".-- 2800 miles on chassis.
1100 miles on Indy Specialty Short Rod motor
Installed new clutch, rpm around 8450 on 2' deep road 8200 skid buried and churning. Stoked.
Ripping around sled feels good. Roll out of throttle, come to a stop, find an alternative line, punch the throttle, blaaaahhhh one cylinder.
Pull plugs, PTO really dark, Mag side looks light. Install new plugs, feels like E-VES aren't opening or its on one cylinder. Flat sounding and 6000 rpm max.
Into my shop it goes..... Compression is within 2 pounds of each cylinder.
Check EVES cable (it was replaced less then 100 miles ago) cable is good. All three valve positions can be distinctly felt.
Lift rear of sled and watch EVES actuator. Start sled, E-VES goes through three position check. Warm sled up to 120 degree (2017 not 18 thermostat) Whack the throttle open sled falls on its face and refuses to pull over 6000 rpm..... E-VES stays closed or in middle position after repeated attempts.
hmmmmm..... swapped out E-VES relays for good measure
Sled still with rear elevated, roll easy into throttle. Ease past 6000 rpm, E-VES valves open around 6500, exhaust note changes and continue easing into throttle until E-VES valve opens fully and rpm hits 8000....
Put rear of sled back on the ground and back sled out of shop. Stab throttle falls on its face, sounds like valves staying closed. Ease into throttle and can slowly accelerate until valves open first at 6500 and then again around 7500... Try and ride in a normal fast throttle opening way and sled sounds flat-- hard to distinguish sound between closed valves or pulling a dead cylinder.
No codes thrown. I know there are ECU parameters that will force the valves closed under certain conditions -- but I have not seen a single code thrown or engine light illuminated.
Thinking my next step is plugging in to Digital Wrench and test firing the injectors, E-VES, fuel pump and looking for any issues. The next step after that is swapping parts out of our other Axys sleds until we stumble across the issue.... I hate throwing parts at something. I like analyzing and diagnosing, finding a smoking gun.
Anyone run across something similar?
