Yes, it's true, Detective Jeff has solved the mystery...again!
The issues with my new Z (new to me anyway) and documented in a separate thread, but after pondering whether to make the long journey from Basingstoke to Tamworth, I finally decided to take the plunge today and was not disappointed.
Jeff fans abound on this forum and for good reason. His knowledge, professionalism and attitude is second to none and he deserves all the success he gets.
I drove away with a completely different car to the one I came in with.
My problems were:
- Engine lacked power below 4000 revs and was hesitant.
- The who car vibrated at times.
- The rear suspension wallowed and bounced around.
The engine issue was obviously the biggest and after hooking up the PC, he immediately identified it as a timing issue. He resolved this by first bypassing the knock/detonation sensor (it's a NA to not an issue) and then reset the timing to the correct value. The difference was immediate!
New rear shocks and new gearbox bushes later, i now have a car that is fast, smooth, and with the new shocks and gear bushes, very tight and controllable.
Perfect!
On a side note, I have to express my disappointed with ZTech. I visited them a month ago and even though they spent much longer than Jeff asessing the car, their summary was:
- Cambelt not on correctly, hence why the timing is wrong.
- Shocks are gone, but the rear springs are also broken!
I was very suspicious of both of the above, especially the cambelt. My logic was simple; when the cambelt was changed by the previous owner 30-40,000 miles ago, why did he not notice the huge performance dip and go straight back to the garage?
Anyway, great job Jeff and I would urge anyone with any issues to visit Jeff, no matter how far.
Yes, it's true, Detective Jeff has solved the mystery...again!
The issues with my new Z (new to me anyway) and documented in a separate thread, but after pondering whether to make the long journey from Basingstoke to Tamworth, I finally decided to take the plunge today and was not disappointed.
Jeff fans abound on this forum and for good reason. His knowledge, professionalism and attitude is second to none and he deserves all the success he gets.
I drove away with a completely different car to the one I came in with.
My problems were:
- Engine lacked power below 4000 revs and was hesitant.
- The who car vibrated at times.
- The rear suspension wallowed and bounced around.
The engine issue was obviously the biggest and after hooking up the PC, he immediately identified it as a timing issue. He resolved this by first bypassing the knock/detonation sensor (it's a NA to not an issue) and then reset the timing to the correct value. The difference was immediate!
New rear shocks and new gearbox bushes later, i now have a car that is fast, smooth, and with the new shocks and gear bushes, very tight and controllable.
Perfect!
On a side note, I have to express my disappointed with ZTech. I visited them a month ago and even though they spent much longer than Jeff asessing the car, their summary was:
- Cambelt not on correctly, hence why the timing is wrong.
- Shocks are gone, but the rear springs are also broken!
I was very suspicious of both of the above, especially the cambelt. My logic was simple; when the cambelt was changed by the previous owner 30-40,000 miles ago, why did he not notice the huge performance dip and go straight back to the garage?
Anyway, great job Jeff and I would urge anyone with any issues to visit Jeff, no matter how far.