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Old 09-27-2010, 10:54 PM   #1 (permalink)
scooterthejake
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6.5L won't even hit on ether

Just bought a parts truck that is claimed to have 8,000 miles on a brand new GM 6.5L crate motor. Motor looks as if it is brand new, with the 6.5L Goodwrench sticker on the valve cover. It is a 93, has the manual pump, but I am not getting and fuel to the filter. I tried putting another lift pump on it to see if the motor would run, but stlll getting no fuel directly from the pump. The thing that concerns me the most is that the truck won't even act like it will fire on ether. Anything that will possibly run will hit off ether, but it has no effect on this engine. What's the reasoning for this? And please no comments on how using ether on a diesel is bad bc that's just bs.
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Old 09-27-2010, 11:14 PM   #2 (permalink)
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Check compression or for possible blockage in the turbo inlet or air cleaner
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Old 09-27-2010, 11:40 PM   #3 (permalink)
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Quote:
Originally Posted by scooterthejake View Post
And please no comments on how using ether on a diesel is bad bc that's just bs.
No it's not BS at all especially on a diesel with glow plugs. Read the label on the can. Read the sticker on the air filter housing. I'm sure your much smarter than the GM engineers that created that sticker though.
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Old 09-27-2010, 11:45 PM   #4 (permalink)
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Your LP is bad and may be the OPS is bad also.

That is a 93, so no PMD so LP and OPS are very important.

No need for Ether.
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Old 09-27-2010, 11:59 PM   #5 (permalink)
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For testing, direct wire your lift pump to manually engage it. Make sure it has power to it. Open the petcock on the fuel line in your engine bay and start up the lift pump. Check to see if you have fuel coming out. Change out your fuel filter too. If it has been sitting, that think might be gunked. That should at least put fuel to your injection pump.

After that, its time to check air intake making sure it is clear. You'd be surprised what critters climb up into. You might want to pull the boot off your air can to the turbo just to check it clear.

Then, its on to the glow plug relay and plugs.

Might be more to it than that. But that is where i would start. IMO.

Just a question: Is the motor still in the donor vehicle? Or did you already switch it out? If its still in the donor, could be bad fuel as well. Just a thought.
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Last edited by Armyofone; 09-28-2010 at 12:02 AM. Reason: adding afterthought.
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Old 09-28-2010, 12:27 AM   #6 (permalink)
tigert
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If Ether on a 6.5 diesel is bull shit, you do not deserve a responce!
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Old 09-28-2010, 12:45 AM   #7 (permalink)
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scooter, try using WD40 instead of ether, it is easier to start than diesel but wont possibly blow up on your glow plugs or explode in your cylinders. If you have access or extra funds, I think advance auto sells a electric universal diesel pump you can drop in a bucket of fuel and hook strait to your IP. With fuel strait to your pump you can bypass anything that might not be right with the truck. My 6.2 has a solenoid on the top of the pump that controls the fuel, whatever does that in your 6.5 hook 12 volts to, that way you have eliminated the truck all together. Plug her in all night to help ease starting and use WD40 ( or ether if your brave) and try to make her fire. I have never worked on a 6.5L so I hope this helps. Whenever we get in a car that wont do as it should thats what we do with the fuel and power, its quicker than chasing fuel and electrical problems in a vehicle. Please be careful with the ether if thats what you use as a starting aid, I have seen engines and trucks destroyed and people hurt, I have also used it in my diesel before when she refused to start under her own power.
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Old 09-28-2010, 12:52 AM   #8 (permalink)
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Either is not good for any diesel let alone an indirect injection diesel with glow plugs or a heated air intake.Unless blowing out the precombustion chambers is your goal.
In cold weather a block heater and properly working glow plugs is all the 6.5 needs.
It has to be real cold for an extended period to even need the block heater but it sure helps to use it for a couple of hours anytime the temp is below freezing.
Even with direct injection diesels either is a poor substitute for a properly working engine to get it started.
Maintain the compression,injectors and the cranking speed (optional block heater)and you should get them started as well without either.
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Old 09-28-2010, 01:04 AM   #9 (permalink)
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If all your factory starting aids fail in a direct inject diesel, ether will not hurt it. Cummins had a factory ether inject in their early models to aid in starting. I have seen real detroits that needed ether to fire off in very cold weather, they dont have glow plugs at all.
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Old 09-28-2010, 02:44 AM   #10 (permalink)
Bison
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Quote:
Originally Posted by Mwy123 View Post
If all your factory starting aids fail in a direct inject diesel, ether will not hurt it. Cummins had a factory ether inject in their early models to aid in starting. I have seen real detroits that needed ether to fire off in very cold weather, they dont have glow plugs at all.
OK friend,i 'll give you the rundown on ether in these 6.5 diesels.First off, you cannot compare a 2 stroke detroit diesel with a indirect 6.5 ,2 strokes are tottaly diff engines.

OK,jump on me folks

Second, you can use a SLIGHT wiff of ether only if you DISABLE the glow circuit,not doing so can and will blow your engine.To much ether will stop the engine dead in its tracks and can bend con rods,stretch head bolts or break the starter from it moorings.

I use ether to start a 6.2 i have in a wheelloader allready for ten yrs with no ill effect. No operating glow circuit.But COMMON sense applies.

But as been said,in a healty engine it is not needed or wise to use ether.Look for the problem instead.
No fuel to injectors(fix fuel supply)
Fuel to injectors.(check glow circuit)
Do compression test,
look for out of time,( sheared key)
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