Mercury 9.9 Hesitates until thoroughly warmed up
 

I have a Merc 9.9 2 stroke (92). It hesitates and bogs down unless I let it run at idle for 3-5 minutes before trying to accelerate
to W.O.T.
Does anyone have any ideas as to what could be causing this to happen?
The repair shop said it was a bad switchbox and wanted 345.00 to replace it plus labor. I priced a new switchbox on Mercury parts
express and it is 172.50. Is 100% markup usual on factory parts?
When I worked at a Chevrolet dealership we had to stick to MSRP on factory parts, however we would mark up anything bought from a
local parts house ( NAPA etc.) 100%.
I kinda feel like the repair shop was trying to put one over on me.

Would the switchbox cause this kind of problem? Or is it a fuel problem? The repair shop said the fuel system was fine.

Fred

Mercury 9.9 Hesitates until thoroughly warmed up
 

If a motor is running a bit lean on the low speed it will "bog" unless warmed-up. Try putting the choke partially on, if it runs
normally then you have a lean condition. A partially plugged low speed jet can cause this.
For my information: By "switchbox" do you mean the ignition module?
"Fred" wrote in message ...
I have a Merc 9.9 2 stroke (92). It hesitates and bogs down unless I let it run at idle for 3-5 minutes before trying to
accelerate
to W.O.T.
Does anyone have any ideas as to what could be causing this to happen?
The repair shop said it was a bad switchbox and wanted 345.00 to replace it plus labor. I priced a new switchbox on Mercury parts
express and it is 172.50. Is 100% markup usual on factory parts?
When I worked at a Chevrolet dealership we had to stick to MSRP on factory parts, however we would mark up anything bought from a
local parts house ( NAPA etc.) 100%.
I kinda feel like the repair shop was trying to put one over on me.

Would the switchbox cause this kind of problem? Or is it a fuel problem? The repair shop said the fuel system was fine.

Fred

Mercury 9.9 Hesitates until thoroughly warmed up
 

Chances are it is not the switch. You have a choke/carb problem. If you
have a manual choke try playing with it. If not, then you have a carb
problem and time to clean them good.

As for the parts price. All the dealers I know charge MSRP but nothing
over.

As you indicated - your Chevy dealer (as with most auto dealers and shops)
charge 100% markup. Not sure why other than to **** off customers and make
short term money but get no repeat business (if the customer is smart). Now
I know that a local rebuilt part may go out quicker than a factory new part.
But you are charging labor as well and you only warrenty the part for 90
days or 1 year depending yet Autozone or Napa or wherever warrenties it for
life.
So, I pay twice the price for the part, don't get the warrenty if I had
bought the part direct, and still pay for labor at $60 or more an hour.
Please explain this as anything other than a rip-off.


--
Tony
My boats and autos - http://t.thomas.home.mchsi.com



"Fred" wrote in message
...
I have a Merc 9.9 2 stroke (92). It hesitates and bogs down unless I let
it run at idle for 3-5 minutes before trying to accelerate
to W.O.T.
Does anyone have any ideas as to what could be causing this to happen?
The repair shop said it was a bad switchbox and wanted 345.00 to replace
it plus labor. I priced a new switchbox on Mercury parts
express and it is 172.50. Is 100% markup usual on factory parts?
When I worked at a Chevrolet dealership we had to stick to MSRP on factory
parts, however we would mark up anything bought from a
local parts house ( NAPA etc.) 100%.
I kinda feel like the repair shop was trying to put one over on me.

Would the switchbox cause this kind of problem? Or is it a fuel problem?
The repair shop said the fuel system was fine.

Fred

Mercury 9.9 Hesitates until thoroughly warmed up
 

If a motor is running a bit lean on the low speed it will "bog" unless
warmed-up. Try putting the choke partially on, if it runs
normally then you have a lean condition.


Good advice but that motor does not have a choke. It uses an enrichener
circuit.

It's easy enough to pull and clean the carb.
Get a factory manual if you need the help.

BR

Mercury 9.9 Hesitates until thoroughly warmed up
 

Yes, The switchbox is the ignition module.
"John Wentworth" wrote in message news:H%l6b.278706$Oz4.74039@rwcrnsc54...
If a motor is running a bit lean on the low speed it will "bog" unless warmed-up. Try putting the choke partially on, if it runs
normally then you have a lean condition. A partially plugged low speed jet can cause this.
For my information: By "switchbox" do you mean the ignition module?
"Fred" wrote in message ...
I have a Merc 9.9 2 stroke (92). It hesitates and bogs down unless I let it run at idle for 3-5 minutes before trying to
accelerate
to W.O.T.
Does anyone have any ideas as to what could be causing this to happen?
The repair shop said it was a bad switchbox and wanted 345.00 to replace it plus labor. I priced a new switchbox on Mercury
parts
express and it is 172.50. Is 100% markup usual on factory parts?
When I worked at a Chevrolet dealership we had to stick to MSRP on factory parts, however we would mark up anything bought from
a
local parts house ( NAPA etc.) 100%.
I kinda feel like the repair shop was trying to put one over on me.

Would the switchbox cause this kind of problem? Or is it a fuel problem? The repair shop said the fuel system was fine.

Fred