The car was under downtime for a roughly 7 months, during that time i replaced a few items, such as alternator, ecu, wireharness, injectors. Finally got it running last week and fired right up, boosted fine and sounded better than ever. I took the car out and the PD crapped out and fuel spirted everywhere as i was climbing a small incline. Replaced the PD the same day and recorded some items via pocketlogger. The log can be found in this thread https://www.rx7club.com/rtek-forum-168/recorded-some-problems-during-todays-drive-728523/ for those who are running the Rtek 2 series. Id like to share a video taken today because i found time from school and work to try and do a diagnosis. Although im leaning towards blown motor. Im doubting my own diagnosis because of the compression test it gave 1 week prior to its current state, which was by far not low at all. Please watch the video and help me figure it out.

http://youtube.com/watch?v=_qRhmeqE-hM

Tomorrow ill be trying again with another diagnosis, a few things i want to note is at one point during reving, the car smoothened out and was like heaven for a brief moment, then returned to its current rough no power state.

 

get another compression test done, an apex seal can go in a split second, and the second before it went compression would have been great yea?

 

i thought of that occuring, but iv never had a seal go out on me on light/ idle load. The inclined road was more like driveway. Im thinking that the change in fuel pressure dropping from the faulty PD caused a lean condition and blew a seal?

 

I just got some headphones and watched the video, how's the boost guage lookin? bouncing around a bit? You said the engine was shaking? sounds kinda like a lawnmower / motorcycle? Get a compression check man, I hate to say it, but i think you blew an apex seal. That's what happened to me when mine went, I was just cruising down the highway under light load and when i got off the highway and at a stop light, it started acting like that outta the blue. But don't take my word for it, get the test done and find out for sure. That's a badass FC btw!

 

Update!

Did a compression test again, 110 max up front with no skips, max 100 in the rear with a small skip.

Im thinking that during the drive possibly disloged a sideseal? I want to walk away from the notion of blown apex seal. Im boosting fine BTW.

 

Well..I didn't take a look at the Video,because Frankly I don't know a how a Turbo'ed engine operates..But!.(there is always a BUT!)..you mentioned that you replaced your Wiring,.alternator,Etc..I am just Throwing this out there..IF your wiring harness is Hitting Somewhere and Momentarily Shorting the Engine out..Honestly,If the Engine "was Fine before' and then you did some Modifications or Cleaning up,I would be Looking at that First.Check the Injector Connectors.If one is loose then you would get Intermitent fuel,and the car would run like ****..and when you think of it,That isn't such a bad idea,is it?..to recheck your work?..Good luck Man..and post with results!

 

ooo thnx i should recheck my work starting with the new injector clips i installed. Probably one got loose when i replaced the PD.

 

bet you were happy about that!