Ford 1700 diesel starting issue

[geozeitl]

Hello. First time post, Starting to have an issue with my Ford 1700 starting. Temp is 60 degrees out. Engine cranks over good and have exaust coming from the stack when
Turning it over but don't start. Tried glow plugs and still don't start. Plug in the block heater for 2 hours and it starts. Any reasoning behind this?

 

[thepumpguysc]

U said u tried the GP's.. have u tested them to see if they're any good.??
The easiest way is to take them out & put 12v to the top post & ground to the body..
They should get CHERRY RED in less than 10 seconds..
OH.. & make sure your getting voltage TO THEM when they're in the engine.. a test lite or multimeter is your friend.

 

[geozeitl]

Thanks, did change the plugs last year and indicator shows its working. Will check the voltage at the plugs Thanks for the reply

 

[Roadworthy]

I'm not sure what kind of indicator you have or how it shows the glow plugs are working but if it's the glowing coil thing it's for dropping the voltage to the plugs. It shows you have a current path, not that the plugs are working. When glow plugs fail the element usually shorts to ground. Current still flows but they no longer heat. Many glow plugs do not run on twelve volts but instead on 9.5 volts. The glowing resistor in older tractors drops the excess voltage. The low resistance of a glow plug makes them virtually impossible to check with an ohmmeter. If the plug is working and you connect a voltmeter to it expect to read nine to ten volts. If it's shorted you'll read zero as all the voltage is being dropped across the resistor. If either plug is shorted you will read zero at the other as well as they're wired in parallel.

 

[geozeitl]

Hey thanks for the info, it is the wire coil indicator. I will check when l get home from work

 

[geozeitl]

Just checked the indicator with a volt meter. I have 12 volts going to the indicator but nothing leaving to the plugs. Noticed small crack in the coil of the indicator. I think problem solved. Will order a new one and let you know. Thanks again

 

[Roadworthy]

If you have twelve volts going in and the indicator glows you have current flow. If you have nothing going out it's because one or more glow plugs is shorted providing a ground path for the power. The crack is not your problem. You need one or more new glow plugs. If you disconnect the glow plugs and do not allow the wires to touch ground the indicator will not be illuminated because there is no longer a path to ground. I suspect the crack you found means nothing. If the indicator lights with the glow plugs disconnected your wire is shorted to ground somewhere between the indicator and the glow plugs.

 

[geozeitl]

Sounds good will check thanks again

 

[geozeitl]

Boy l feel stupid, l also checked the glow plugs on both cylinders and both are bad. I just changed them last year. I did notice that the very tips were burned right off. What would cause that?

 

[thepumpguysc]

Holding them on for extended periods of time.. & possibly some additive that your putting in your fuel at the wrong dilution.??

 

[geozeitl]

I do put a little seafoam in the diesel. Wonder if that would cause that?

 

[thepumpguysc]

That's hard to say..
Personally I use SF in my daily driver once in awhile & its a noticeable difference.. but then again, I'm using it "as directed".
For future reff.. LOOK UP/FIND the starting procedure using glow plugs specifically for your machine.. & follow the instructions..
Write down the date u bought the GP's.. & compare it to the "next time" u have to buy some..
Don't forget/Keep In Mind, Glow Plugs are a WEAR ITEM.. they are designed to be replaced.. Just like a fan belt or a battery..
AND there ARE differences in manufacturers.. so if it becomes a REAL problem.. switch manuf.. Bosch, Denso, NGK.. to name a few..

Happy that u got it up & running w/o anything major happening..

 

[geozeitl]

Hey thanks again, l do use what sf SF recommends. The manual states to to hold Gp'S on for 30 seconds. Just think they should last longer than a year l dont think anything internally would cause that..

 

[toukow]

Hey thanks again, l do use what sf SF recommends. The manual states to to hold Gp'S on for 30 seconds. Just think they should last longer than a year l dont think anything internally would cause that..

Just for reference, I put over on 400 hours over 13 years on my Ford 1700 (total hours 850) without issue or replacement. I used only Power Service silver bottle. My tractor required glow plug use (30 seconds or less) regardless of ambient temperature. Another 1700 forum member said he had to use them as well. For what its worth, Dean

 

[geozeitl]

Thanks for the info

 

[geozeitl]

Good morning, well installed my glow plug indicator and both glow plugs and did a multimeter check to make sure I'm getting power to the plugs, all is well there. Did try to start after heating up the plugs for 30 seconds. Still cranks but no ignition. Getting smoke out of the stack when cranking. Plugged in the block heater and let it heat up for 2 hours. And then it starts, worn rings? Did a compression test last year and it was 390 on both cylinders

 

[thepumpguysc]

Ya know.. that 30 sec. instruction was for a fresh engine.. just say'n,, ya might try 60..??
How about the injectors.?? They're relatively inexpensive to re-do.. maybe they aren't atomizing the fuel properly..??
& even the pump has to pump the correct/enough fuel to start..
I'd start w/ a longer gp time..
Then move to the injectors & lastly the pump..
ALL THIS is based on the assumption that the compression is good & the valves are set right & the starter is spinning fast enough..

 

[geozeitl]

Thanks pumpguy, was looking for a kit to rebuild or just replace the injectors. Seem hard to find any ideas

 

[geozeitl]

I found place that rebuilds injectors will try the longer gp time to see of any changes

 

[thepumpguysc]

What am I.. chopped liver.?? Lol