After months of putting it off, I finally decided to get my knock sensors done on my 94Q. After speaking to my mechanic who declined to do the work, I had contacted Keith VanMeter in New Jersey. I called there three times and no one ever returned my phone calls, so I figured they didn't want to to get involved in it either. I then decided to call my local Infiniti dealership to see if I could get an estimate from them, however they seemed as if they were trying to persuade me not to do it. And I figured they would probably charge me $1000 to even do it anyway. So after putting it off for a couple more weeks I decided to reach out to one of the guys on this forum (who shall remain nameless for right now) who had offered to help another member on here awhile back with work on his Q. I emailed him asking him if he was willing and able to replace the knock sensors and harness and he agreed to do it for a small fee. However, I had to drive to Massachusetts (around 300 miles) to get it to him so he could do the work. So after staying over a friends house Saturday night who lives in Connecticut, I drove another 100 miles or so to meet up with the guy yesterday morning.
So we met up around 11AM yesterday and he started to take off the plenum and do the work. It took about 6 hours to get everything disconnected, to reconnect the new sensors and reconnect the plenum and hoses. So at around 530pm or so when he finished, I attempted to start the engine and immediately I knew something wasn't right. My Q was shaking and vibrating which it had never done before. My car has always purred like a kitten since the day I bought it and remained that way up until that point. So he asked me to turn off the engine while he double checked all the connections and then asked me to restart it again. After restarting it, the vibrating started getting worse and worse and worse until we started hearing this horrible grinding noise. So again, he looked everything over and we tried to start it again. The car sounded even worse this time and the grinding was getting worse to the point where the car was now stalling. After repeatedly trying to start the car, it got continually worse until it just wouldn't start at all. I should mention that at one point while he was removing the plenum, one of the bolts slipped out of is hands and fell down "somewhere". He didn't "think" it fell into the runners, but he put a camera in there anyway to check it. I was a little concerned about it at the time, but hoped it maybe just fell and got caught up in something else down below.
So anyway, after about an hour of deliberating on what to do, this guy and his father pushed my car out of the garage that he was doing the work in and pushed it into one of the spots outside. Not knowing what the hell to do at this point, the guy said he didnt feel comfortable touching it anymore and recommended me taking it to the local Infiniti dealership up the block. He then dropped me off at a hotel nearby where I spent the night last night and first thing this morning I walked to the Infiniti dealership and told them what happened. The service manager gave me a number for a local towing service and I had to have the car towed to them so they could figure out what was going on. After about an hour, I finally got the car towed to Infiniti and I explained to them what happened and that this guy from here was trying to replace my knock sensors and what happened after trying to start it. So they proceeded to diagnose from there and after about 2 hours of diagnosing what was going on, they told me the following:
That debree and/or a foreign object is suspected in the engine/intake. Compression test performed and cylinder #6 came back with 0 compression. Valve damage suspected and engine take down required to further diagnose the extent of the damage. They said it will cost over 4 figures for them to take apart the engine and I obviously don't have that kind of money to do that. So I ended up leaving my car at the dealership and taking a train back to New York until I can figure out what I'm going to do. I have no car and I have already spent over $600 between hotel, towing, Infiniti diagnostics, cab to take to train, and my Amtrak ticket. I had to call out of work today and I have no way to get to work tomorrow as I live out in the boonies and my job is 30 miles away from home. Needless to say I'm pretty devastated at this point.
I have to idea how to handle this situation. What was supposed to be a relatively routine ks job has turned into a complete nightmare. The service manager at Infiniti told me I would be better off getting an engine replacement than even attempting to take it apart cuz the expense is just not worth it. So my near mint G50 is now essentially destroyed. It's currently sitting at the dealership until I decide what to do with it. Towing it back to NY will cost hundreds and even if I tow it back here, I still don't even know what I could or should do with it. Should I pay to get the engine replaced? Should I junk it?
I need some serious help here and any advice is greatly appreciated. The guy I met off here who did the work is not responding my text messages so I'm guessing he's decided to hang me out to dry. If somebody can please call me or email me with any help, I would really appreciate it!
