Joined
·
5 Posts
Need help, very sluggish 748 engine (fixed)
I was riding my 748 yesterday (10k miles), everything was running well as normal. Just did a valve adjustment ~300 miles ago. Came to a stop at a stoplight, then upon takeoff the engine became extremely sluggish and would hardly accelerate. Before this I was riding very normally, no WOT or any sort of "sporty" riding. Once above around 4k RPM the engine would all of a sudden kick in and operate like normal. The engine makes a much lower and underpowered sound when this sluggish behavior happens, but sounds normal when power comes back. I pulled the plugs, both seem decent. Horizontal plug had a little oil on it, vertical seemed to have some condensed water? Also, the vertical spark plug wire seems to have been broken at the end and taped by the PO. Any ideas or suggestions? Let it sit for a day, still does the same. Like I said, the engine is much quieter and has a lower tone. It seems like the engine is all of a sudden very far off for being tuned, some problem with injectors or A/F ratio? Both cylinders work, no CEL, oil is good (just changed 1 month ago). Timing belts need to be done, waiting for Ca-Cycleworks on that one.
EDIT: Problem fixed, condensation in vertical spark plug cavity caused the issue.
I was riding my 748 yesterday (10k miles), everything was running well as normal. Just did a valve adjustment ~300 miles ago. Came to a stop at a stoplight, then upon takeoff the engine became extremely sluggish and would hardly accelerate. Before this I was riding very normally, no WOT or any sort of "sporty" riding. Once above around 4k RPM the engine would all of a sudden kick in and operate like normal. The engine makes a much lower and underpowered sound when this sluggish behavior happens, but sounds normal when power comes back. I pulled the plugs, both seem decent. Horizontal plug had a little oil on it, vertical seemed to have some condensed water? Also, the vertical spark plug wire seems to have been broken at the end and taped by the PO. Any ideas or suggestions? Let it sit for a day, still does the same. Like I said, the engine is much quieter and has a lower tone. It seems like the engine is all of a sudden very far off for being tuned, some problem with injectors or A/F ratio? Both cylinders work, no CEL, oil is good (just changed 1 month ago). Timing belts need to be done, waiting for Ca-Cycleworks on that one.
EDIT: Problem fixed, condensation in vertical spark plug cavity caused the issue.