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Need help with a 170
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Gary (sw Wis.) View Drop Down
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Joined: 12 Sep 2009
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Points: 209 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary (sw Wis.) Quote  Post ReplyReply Direct Link To This Post Topic: Need help with a 170
    Posted: 01 Apr 2019 at 12:55pm
My son's 170 lost power out of nowhere. It will start but has no throttle response, no power, it can barely move itself. It spits and sputters and occasionally back fires.
We checked compression and have between 168 and 175 on 4 cylinders. We also replace the manifold gaskets as they looked to be leaking.
Looking for advice and ideas on where to go next.  Thanks
 
 
190XT - D17 - D14 - WD45 w/loader - WD - (2)B110 - 616H - 610 - B-208 - WD with 190 Mounted Corn Picker - All Crop 60
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Allis dave View Drop Down
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Points: 2988 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis dave Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 1:46pm
I'm guessing by the compression numbers that it's a gas correct?
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DougS View Drop Down
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Points: 2490 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougS Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 1:49pm
What have you checked on the electrical system? Timing ok? Coil and condenser? Good solid connections everywhere on all wiring from the battery through the switch and to the coil?
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Points: 2564 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AaronSEIA Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 2:01pm
Carb sounds plugged up.  Have good gas flow to it?
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exSW View Drop Down
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Points: 914 		Post Options Post Options   Thanks (0) Thanks(0)   Quote exSW Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 3:19pm
I'd say ethanol ate the soft parts in the fuel system.
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plummerscarin View Drop Down
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Points: 3782 		Post Options Post Options   Thanks (0) Thanks(0)   Quote plummerscarin Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 4:02pm
I'm thinking fuel flow probably
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AllisFreak MN View Drop Down
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Joined: 07 Dec 2009
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Points: 1574 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AllisFreak MN Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 4:07pm
Sounds like a bad condenser, my D17 did the exact same thing.
'49 A-C WD, '51 A-C WD, '63 A-C D17 Series III, 1968 A-C One-Seventy, '82 A-C 6060, '75 A-C 7040, A-C #3 sickle mower, 2 A-C 701 wagons, '78 Gleaner M2
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Joined: 13 Oct 2009
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Points: 1587 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wekracer Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 7:57pm
Originally posted by AllisFreak MN AllisFreak MN wrote:

Sounds like a bad condenser, my D17 did the exact same thing.


X2 points or condenser
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JC-WI View Drop Down
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Points: 34224 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JC-WI Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 8:20pm
Look for plug in gas line... look in the tank and see if the inlet is pugged... check flow at carburetor take drain plug out of float bowl and drain a big bean can full and see how fast it flows...
...Maybe jets are plugged in carb...
 Maybe need to drain water out of gasolene....
Mmm 'no throttle response' maybe you have governor spring break?
 Points burnt? , are they floating?
Moisture got into the cap?
Distributor rotor leaking spark?
Check all plug wires...for continuity on solid copper wire, and resistance on carbon core.
 If none of above, coil could have gone bad... tho not as likely as a condensor pukin out.
 Make sure you have good current to the distributor and not a loose or broken wire or one taped up.
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Albert View Drop Down
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Points: 410 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Albert Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 9:17pm
see Dons upcoming class
Albert
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Eldon (WA) View Drop Down
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Points: 7765 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Eldon (WA) Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 9:39pm
Does it help to choke it? I had one that would start to sputter under load and I could choke it and it would come out of it. After a year of using the choke and constantly messing with the main jet screw I finally figured  out that the main jet seat was not screwed in properly and would work its way out from vibration. Removed the jet, tightened up the seat and ran great from then on.
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Allen Dilg View Drop Down
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Points: 820 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allen Dilg Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 10:19pm
Hello Gary     People often ask for diagnosis, get many possible causes,  but never post what the FIX was.      Please repost    Allen
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Points: 7447 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DSeries4 Quote  Post ReplyReply Direct Link To This Post Posted: 01 Apr 2019 at 10:25pm
Not knowing what maintenance it has had recently, I would do a good tune up - plugs, wires, cap, condensor (or go electronic), rotor.  Definitely go through the fuel system as well - clean out the tank, sediment bowl and give the carb a good cleaning.  Replace the air filter as well.
Carbs seem to be the most overlooked item when it comes to maintenance.
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Gary (sw Wis.) View Drop Down
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Points: 209 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary (sw Wis.) Quote  Post ReplyReply Direct Link To This Post Posted: 02 Apr 2019 at 7:12am
Thanks for all the input. He bought it last summer so we don't know how it was maintained. I don't get up there all that often but I'll take your advice with me on my next visit and let you know what we find out.
190XT - D17 - D14 - WD45 w/loader - WD - (2)B110 - 616H - 610 - B-208 - WD with 190 Mounted Corn Picker - All Crop 60
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Points: 2490 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougS Quote  Post ReplyReply Direct Link To This Post Posted: 02 Apr 2019 at 9:14am
Always go with the easy fix first. If the problem suddenly appears it's either a slug of gunk in the fuel system, which the strainer should catch, or something electrical that failed suddenly.
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Gary (sw Wis.) View Drop Down
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Joined: 12 Sep 2009
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Points: 209 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary (sw Wis.) Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2019 at 1:09pm
Well I made it up to my son's place yesterday.
We put new plugs, wires, cap, rotor, points, and condenser all in and it ran:). He said it's never sounded better since he's owned it. It still need other attention but getting it running was number one on the list. Thanks to DJS for the parts and the timely shipping.
 
And a big thanks to all that offer advice and wisdom.  Gary
190XT - D17 - D14 - WD45 w/loader - WD - (2)B110 - 616H - 610 - B-208 - WD with 190 Mounted Corn Picker - All Crop 60
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DMiller View Drop Down
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Points: 33220 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2019 at 1:13pm
Instant failures are usually small parts!!

Edited by DMiller - 09 Apr 2019 at 1:13pm
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