Go Back  Offshoreonly.com > Technical > General Q & A
spastic tachometer.... >

spastic tachometer....

Like Tree3Likes

spastic tachometer....

Reply

Old 08-08-2018, 01:41 PM
  #11
Registered
 
Join Date: Aug 2012
Location: Collierville, TN and Pickwick Lake
My Boat: Cigarette Tiger, Formula, Raysoncraft, Tahiti, Angler
Posts: 1,856
Default

Originally Posted by eichhoma View Post
Does anyone think there is any good logic in the Blaster coil effecting the tach, or somehow causing some interference?
No
payuppsucker is offline  
Reply With Quote
Old 08-08-2018, 01:45 PM
  #12
Registered
Thread Starter
iTrader: (1)
 
Join Date: Jul 2007
Location: St. Louis
My Boat: 1993 Cigarette Top Gun
Posts: 449
Default

thanks for the additional info.... I appreciate the help, this might quickly get out of my comfort zone but we'll give it a shot
eichhoma is offline  
Reply With Quote
Old 08-08-2018, 02:08 PM
  #13
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 10,033
Default

Originally Posted by payuppsucker View Post
^^^^^^^^^^^what Steve (SB) said................and check the ground wire on the tach and make sure it's secure then trace it to it's grounding point and check that connection. Sounds like a ground issue since actuating any switch causes it to peg out.
What Paul (payuppsucker) said.
SB is offline  
Reply With Quote
Old 08-08-2018, 02:13 PM
  #14
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 10,033
Default

Originally Posted by F-2 Speedy View Post
I tried running some new msd coils on stock Mercury ignitions, they started to over heat the timing modules to the point that the distributor was double firing the engine @ 10* and again @ 270*................ they are a POS....
That sucks. Don't quote me but i think the stock merc canister coil is .8 ohms and this must be matched when using a different coil ? That said, before I heard this, I had installed the HVC epoxy canister coils on several TBIV motors many years ago (10+) and still going strong.

But yeh,best bet is to stay away from MSD anything. ;(
Many Suck Donkeys ...lol
SB is offline  
Reply With Quote
Old 08-08-2018, 02:15 PM
  #15
Registered
 
Join Date: Aug 2012
Location: Collierville, TN and Pickwick Lake
My Boat: Cigarette Tiger, Formula, Raysoncraft, Tahiti, Angler
Posts: 1,856
Default

Originally Posted by SB View Post
What Paul (payuppsucker) said.
Yea but it's Kelly, not Paul :-(
payuppsucker is offline  
Reply With Quote
Old 08-08-2018, 02:17 PM
  #16
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 10,033
Default

You didn't get the joke. I tried also with the emoticons. LOL.
My name is Scott,not Steve.
SB is offline  
Reply With Quote
Old 08-08-2018, 02:29 PM
  #17
Registered
 
Join Date: Aug 2012
Location: Collierville, TN and Pickwick Lake
My Boat: Cigarette Tiger, Formula, Raysoncraft, Tahiti, Angler
Posts: 1,856
Default

My first thought was that I had messed your name up but then I was like "nah".........I'm a dumbass.
payuppsucker is offline  
Reply With Quote
Old 08-08-2018, 02:33 PM
  #18
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 10,033
Default

I don't care really what I'm called. Was trying to make a funny. LOL.Just don't call me Darr, Sunkin, or KidApache.
SB is offline  
Reply With Quote
Old 08-08-2018, 02:49 PM
  #19
Platinum Member
Platinum Member
iTrader: (6)
 
F-2 Speedy's Avatar
 
Join Date: May 2012
Location: Midwest & T-Rock
My Boat: F2 Speed racer
Posts: 6,446
Default

Originally Posted by SB View Post
That sucks. Don't quote me but i think the stock merc canister coil is .8 ohms and this must be matched when using a different coil ? That said, before I heard this, I had installed the HVC epoxy canister coils on several TBIV motors many years ago (10+) and still going strong.

But yeh,best bet is to stay away from MSD anything. ;(
Many Suck Donkeys ...lol
agree, my name is Nobody not Shirley or Sue......
SB likes this.
F-2 Speedy is offline  
Reply With Quote
Old 08-08-2018, 11:30 PM
  #20
Charter Member # 55
Charter Member
 
Griff's Avatar
 
Join Date: Oct 2000
Location: Omaha
My Boat: .......32............. ............Active Thunder....
Posts: 17,094
Default

Originally Posted by eichhoma View Post
Does anyone think there is any good logic in the Blaster coil effecting the tach, or somehow causing some interference?
Very doubtful. My bet is on a ground issue.
Try running a ground wire from one of the dist cap screws to a good clean ground on the engine block.
Griff is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


OSO Sponsor
OSO Advertiser
OSO Advertiser
OSO Advertiser