Quick Start questions.

[MarkV_Deep6]

Sorry to beat a dead horse, but I still am confused on how Quick Start may be disabled, or bypassed. It should be the same technology on all the engines.

Posted by Rod Bolt.

"the quick start feature is powered by the power coil at the front of the stator by the two orange black wires from the stator to the pack, its controled by a start signal on the yellow/red wire from the solinoid to the pack and the white/blck wire from the switch on the port head, if any are defective/out of spec the system may not work properly. its designed to advance the ign timing to 10*BTDC if engine temp is below a specified temp as "seen" by the port switch. so with a 12v start signal coupled with an open circuit on the temp switch white/black it sends it into quickstart timing advance until the white/blk circuit closes. the feature will(supposed to anyway) cancel at RPM's above 1100. when it starts cold the idle should remain in the 1100-1200 range and drop back to the 750 RPM range in 30 seconds or so depending on head temp."

What Rod Bolt describes is an adjustment to timeing that is controlled by the sensor on the starbord side on V engines. I have further read that to disable this, the engine should be brought to operating temp. It sounds logical. Since Low speed timing is not highly critical warming an engine to bypass quick start should be the prefered method. Yes???

 

[ezeke]

Re: Quick Start questions.

QuikStart is a powerpack fuction and is disabled by disconnecting the black and white wire that runs from only one of the temperature switches to the powerpack. When the temperature of the engine is above 96 degrees, reconnecting the black and white wire should return the ignition to normal timing.

QuikStart engages each time that the engine is restarted regardless of temperature for about 5 seconds. If the engine is 96 degrees or on some models 105 degrees, QuikStart disengages, returning the timing to normal.

Whenever the engine reaches +/- 1100 RPM, QuikStart also disengages.

The location of the sender is specific to the particular motor. On my 1988 140 and 1990 225 looper motors, the Quikstart enabling temperature switches are on the port side.

 

[MarkV_Deep6]

Re: Quick Start questions.

Thanks ezeke... however I did not notice a difference when setting the timing with the black and white wire disconnected or connected. Since mine was fried when grounding, perhaps it is not activating anyway.
I'll know this week when the replacment gets here.
I reset the timing at 12 degrees btdc @ WOT. 16 degrees per manual,-4.

 

[Faztbullet]

Re: Quick Start questions.

You must ground the wht/blk from the pack, engine will come out of quick start within a few seconds as pack is tricked into thinking motor is at temp. This is how I set customers timing,also with test prop for top end timing. If you use a dail indicater instead of piston stop tool for TDC decrease top end timing 2 degrees, I have seen a difference.

 

[MarkV_Deep6]

Re: Quick Start questions.

Faztbullet; I understand what your saying, however, this is setting timing without starting the engine. Most of us (me) can't afford, or cant find a test prop.

Will grounding the white wire/black stripe with the key engaged work?

 

[Faztbullet]

Re: Quick Start questions.

Its hard to do a static timing on a quick start engine. This is how I would do it:
(1) disconnect wht/blk and ground pack side to block
(2) remove all spark plugs from engine
(3) attach timing lite to #1 plug and ground plug to block
(4) remove throttle cable from bracket so it will advance throttle and timer base fully
(5) check that timing pointer is correctly set(piston stop tool or dail indicater)
(6) attach starter button to starter soleniod
(7) advance throttle & spark fully and crank engine
(8) set timing about 4 degrees lower than required (engine will gain 2 degree's back when running due to ignition design) and the other 2 wont hurt due to todays junky fuel