7tooZ 187 1 Vehicles Report post ID: #1 Posted October 7, 2020 Received a package today with a couple gems inside. For the last month or so I have been chasing a lean condition just off idle on my 240 motor. Cold it was hard to start even while being choked, a condition I have not experienced since purchasing my Ztherapy carbs in early 2001. Trying all of the normal problem solving I finally did the “starting fluid test” and found that when I it sprayed on the rear side of the back carb the idle was effected. Closer examination I discover the shinny silver cap over the throttle shaft was missing and covering the hole definitely changed the idle. Engine ran good at 2500+ RPM. Steve at ZT called me back and we discussed the issues and he advised me the throttle shaft seal was probably blown out. (A backfire can do that). He offered check the carbs if I would send them to him. That day I UPS them off to him and in less that two weeks I received a package back. My 20 year ZT old carbs look brand new and based on the cost of a ZT rebuild kit the price was a steal. They are one of those companies that you can’t say enough good thing about. THANK YOU STEVE . 9 Share this post Link to post Share on other sites
Mike 1,055 4 Vehicles Report post ID: #2 Posted October 7, 2020 Yes sir, great service!! Share this post Link to post Share on other sites
siteunseen 3,414 5 Vehicles Report post ID: #3 Posted October 7, 2020 I agree with that. Probably the last "good guys" out of state business I'll ever use. I called with a question some years ago and they gave me Mr. Bruce Palmer's personal cell phone number. He answered on the 3rd ring, answered my question/problem and over-nighted new valves at his expense. A+ Better Business Bureau. Share this post Link to post Share on other sites
Diseazd 805 Report post ID: #4 Posted October 7, 2020 Couldn’t agree more! Ztherapy is how all businesses should be run! Bruce and Steve are the best. 1 Share this post Link to post Share on other sites
7tooZ 187 1 Vehicles Report post ID: #5 Posted October 7, 2020 Good recommendations from some smart experienced people. Share this post Link to post Share on other sites
DatsunZGuy 127 Report post ID: #6 Posted October 8, 2020 I ordered a set of carburetor parts from Bruce today. Great, friendly service. Business must be good since the current turnaround time for rebuilds is March of 2021. Share this post Link to post Share on other sites
7tooZ 187 1 Vehicles Report post ID: #7 Posted October 12, 2020 (edited) Found some time to work on the rebuild carb install. Awesome working on clean well adjust parts. They send along a nice set of instructions that I actually read and learned something new: before making any adjustments to balance the carbs disconnect the throttle linkage at the center of the balance tube. Then when done work backwards from there to the gas pedal. if it needs to be adjusted it will be obvious. Note line 3: they set float level from the top of the float to the bottom of the cap to .55 in. The rest are a nice reminder of order to balance carbs. last here is a pix of 20 year old technology. gross jets. Still working after 20 years. Had easy time setting up. Balanced at idle (choke and throttle linkage discounted) balanced at 2000 adjusted the valves reset timing to 9 degrees BTDC. Max advance to 36 degrees rechecked balances added 1/2 turn to both mixture screws to improve smooth idle rechecked balances shorten throttle pedal linkage ( checked for WOT ) Best $300 of 2020 money I have spent lately . Hope this help someone who is undecided. Edited October 12, 2020 by 7tooZ Added content 1 Share this post Link to post Share on other sites
SoCalJim