glow plugs

Alexporze · **Joined:** Thu Jan 10, 2019 1:58 pm **Posts:** 5

My question is: can one exchange the original 5 volt plugs for 7 volt without any other modifications to the electric relay or computer program?
Alex

flash7210 · **Posted:** Sun Jan 20, 2019 8:37 pm

Yes, you can replace all four 7v plugs with four new 5v plugs.
No other mods necessary.
I’ve done it and so have many others here.
Will give you improved cold weather starting.

casm · **Joined:** Sun Jan 29, 2006 5:05 pm **Posts:** 694

Alexporze wrote:

My question is: can one exchange the original 5 volt plugs for 7 volt without any other modifications to the electric relay or computer program?
Alex

Absolutely. Installed Bosch 5V glow plugs before Winter hit and am extremely glad that I did - as stated earlier, the cold-weather starting is much improved.

GordnadoCRD · **Posted:** Mon Jan 21, 2019 7:05 pm

Alexporze wrote:

My question is: can one exchange the original 5 volt plugs for 7 volt without any other modifications to the electric relay or computer program?
Alex

The original plugs are 7V Ceramic, not 5V
Removing the 7V ceramic saves you the risk of them breaking in the combustion chamber and damaging the engine.
Replacing the 7V ceramic with 5V steel and no other changes, additionally suffers a minimal loss of cold weather cold start performance. If you change the tune to 5V programming cold starts can suffer pretty badly if you live in a cold climate.

Alexporze · **Joined:** Thu Jan 10, 2019 1:58 pm **Posts:** 5

Thanks for the answer, if fact, there is a poster stuck on the front of the engine block that says " 7 volt ceramic plugs installed" , so I will change them to steel 7 volts plugs.
There is a doubt in me, as to where exactly they are located on the engine block. On top? on the side? If you can post a photo it would help. Mine is a 2006 Liberty CRD with the italian engine.
Alex

turblediesel · **Posted:** Mon Feb 04, 2019 2:45 pm

The glow plugs are on the driver's side of the engine. They lie horizontally and the tips point toward the tips of the injectors which are vertical.

Ditch the 7 volt ceramic glow plugs and install 5 volt metal glow plugs.

WWDiesel · **Posted:** Mon Feb 04, 2019 3:01 pm

Alexporze wrote:

Thanks for the answer, if fact, there is a poster stuck on the front of the engine block that says " 7 volt ceramic plugs installed" , so I will change them to steel 7 volts plugs.
There is a doubt in me, as to where exactly they are located on the engine block. On top? on the side? If you can post a photo it would help. Mine is a 2006 Liberty CRD with the italian engine.
Alex

The recommendation now is to replace the 7v ceramic GP's with the 5v glow plugs. Much better startups in very cold temperatures.
IDParts and some others sale the 5v replacements.

As to location, this picture shows two of them. They are located on the drivers side of the cylinder head in a hard to see area. (Arrows in picture below)
No. 3 requires the FCV & intake elbow to be removed for better access to allow you to change them out.
Soak them good in a good penetrating oil like PB blaster or Kroil Oil. Engine cold and block heater plugged in may also help.
Be gentle with them, some have broke one off when trying to remove which in most cases will require the head to be removed to get a broken one out.

fool4wheelin · **Posted:** Sun Feb 17, 2019 4:39 pm

WWDiesel wrote:

The recommendation now is to replace the 7v ceramic GP's with the 5v glow plugs. Much better startups in very cold temperatures.

The 5V steel plugs do not have better starting performance than the original 7V ceramics. This is speaking from personal experience along with feedback from others.

DieselJeepLuvr · **Posted:** Fri Feb 22, 2019 12:41 am

fool4wheelin wrote:

WWDiesel wrote:

The recommendation now is to replace the 7v ceramic GP's with the 5v glow plugs. Much better startups in very cold temperatures.

The 5V steel plugs do not have better starting performance than the original 7V ceramics. This is speaking from personal experience along with feedback from others.

True. And DO NOT buy the Etechno brand. They suck. Don't ask me how I know.

GordnadoCRD · **Posted:** Sat Feb 23, 2019 9:16 am

Just to clarify:
The problem with the ceramics isn't with start performance, it's with their tendency to fracture tips which can take out pistons, heads, valves, etc.

The 5V steel replacements DON'T work better than the ceramics. They DO work better than 7v steel when run with 7v OEM tuning. I understand GDE and Yeti have modified tuning that also gets increased starting performance specific for the 5V plugs.

7V ETECNO1 really sucked IMO. My 5V ETECNO1s are over 2 years now with not 1 problem down to -15F

DieselJeepLuvr · **Posted:** Mon Feb 25, 2019 2:32 pm

GordnadoCRD wrote:

Just to clarify:
The problem with the ceramics isn't with start performance, it's with their tendency to fracture tips which can take out pistons, heads, valves, etc.

The 5V steel replacements DON'T work better than the ceramics. They DO work better than 7v steel when run with 7v OEM tuning. I understand GDE and Yeti have modified tuning that also gets increased starting performance specific for the 5V plugs.

7V ETECNO1 really sucked IMO. My 5V ETECNO1s are over 2 years now with not 1 problem down to -15F

Just checked my order and it was the 7v Etecno's I installed. Yes they suck and will be replaced with the 5v Bosch.

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