with winter coming i've decide to change my glow plugs. I've got around 120,000 on them. it still starts fine, just a little pm. Which ones do i buy? kennedy diesels quick heat plugs or the bosch plugs? i've got kennedy's right now and am really happy with them but haven't heard much about the bosch plugs. Also i'm going to put a new return line kit on the injectors as mine are seeping fuel and making a mess out of things. (they are the push on ones w/o clamps). Anyone else have this trouble?

Just a thought take a look at SS diesel supplys instant-heat glow plugs. I changed them at 380,000km's. It made a huge difference when cold staring.

Those quick heats are going to cause you grief up here in this climate...been there done that...

I've got kennedy quick heats and love them, when they all work. In a year and a half i've had to change out 3 of them due to burning out. I put a set of the bosch plugs in a customers truck and haven't heard that any have burnt out yet.

What about the A/C Delco Glow plugs. Are they any good?

i've heard that the ac delco can swell, making them really hard to get out. kennedy claims his will not swell. not sure about the bosch plugs. still not sure what to do...

The AC Delco 60 G will not swell and work great although some here have said they require slightly longer glow time.I put mine in without removing anything other than the pass. side front tire in less than 2 hours.

Those quick heats are going to cause you grief up here in this climate...been there done that...

yup! stay faaaaaaaaaaaaaaaaaarrr away from them. Unless you want to get towed on the coldest day of the year.

I had AC Delco 9G's in mine for 270,000 miles. They were still working fine when replaced last month with 60g's.

The 9G's will only swell if the controller malfuntions and stays on too long, overheating the plugs.

My 60g's do not work as well- wish I had not used them.

Yes, I am also wondering what ones to put in. The originals I had in the 92 pickup never messed up once. Now I have this new/used motor and am experiencing some starting issues. I might locate my old ones and put them in and see if the starting problems subside. Cbiers, I will be listening in on what you decide to do. good luck.

Like stated earlier. The GM#60 plugs need a few seconds more glow time to work right. Pretty easy fix to override them for more time.
Ted

i think i'm going with the bosch plugs. they are a little more expensive but i think i'd like to give them a try, unless someone can talk me out of it..

yup! stay faaaaaaaaaaaaaaaaaarrr away from them. Unless you want to get towed on the coldest day of the year.

MY Kennedy quick heats work fine - they don't last as long as I like but none do. Ill check all 8 again soon and replace as necessary - as I did when I used the #60's

MY Kennedy quick heats work fine - they don't last as long as I like but none do. Ill check all 8 again soon and replace as necessary - as I did when I used the #60's

My SSD quick heats were all burned up at 1 year. One by one they started failing, till the truck didn't start. The 60g's I have now seem to be working fine.
I'm glad your quick heats are working well for you man!

I put the WAP quick heats in 2 summers ago. Had trouble starting all the next winter but since they were new, couldn't be the GP's. Wrong!! I finally swapped them out for some A/C 60g's and the trucks started perfectly ever since.

I'm a bosch fan. Try this. Pull two glow plug leads, driver side easier, Then take a plug of each make, ground them and have a helper turn on the ign while you watch the plugs. Make your choice. I made a couple of ground wires with clips so I could position the plugs in a safe spot where they were easy to see.

I heard a while back that Wellman, the maker of the quick heats, was looking at early burn out problem and had a fix on the new plugs. Had something to do with the voltage spike you get after it starts and alternator kicks in. Too much voltage on the post start glow cycles. Haven't tried them since then, but it makes sense. The older quick heats worked great when they were working, anyway.
Ted

Any one else a Bosh fan? Also are they a #60?

Bosch, My Bad

This is a good time of year to expound on this thread,.
i,m ready for glow plugs real soon too,. but there's so many hard and fast opinions,. who's right?

i remember the fast heat glow plugs guy coming on this forum and saying they were upgrading the design,. chris1500, dieseldad, did you guys have an early set? where you running quick heats with a manual overide? why are you a fan of bosch's, rusty canuck?
Have they fixed the problems associated with early failure on the quick heats? or are they cleverly designed to fail 1 month after the 1 yr warranty period?

i,m in the southern part of ontario,. but it get's real chilly here sometimes,. and i,m on some open pasture land so wind chill and driven snow is a big factor,.i don't want another switch in the truck really,.yet folks in the cooler parts seem to lean towards 60g's and a manual controller,.

i,m also thinking about soldering the wires right to the spade terminals to make sure of a good contact,
so who's right? whats really better?
thanks
Nick

I installed quick heats last winter I can tell already from the few cold mornings that we've had that they aren't going to make it through this winter. I'm leaning toward the ac 60g's.

I'm running Delphis in my Burb haven't had any issues with those, I tested against the quick heats in the truck, Delphis heat slightly quicker than the quick heat, but the quick heats do have about 6 years on em. They did a study on Page seems the 60gs are just as durable as others but may require glow modification especially on 18:1 engines, easily done with a momentary on push button, to energize the control side of existing glow relay, push the putton to pre glow before attempting to start truck on those very cold mornings.

Yea, being I don't even know what is in this truck for glow plugs I think I will put in A/C delco and put a over ride button in if needed. Truck hasn't been starting very good. I just put in two new batteries and didn't seem to make a difference. Might be a starter issue also with over 200,000 miles on it. The darn glow plug controller took a dump on me Today also. The glow plug light in the dash didn't come on when I can home. I unplugged the plug in the front of the engine making it think it is -40 outside. It did start alittle better but not a whole lot. I wonder if by unpluging it made the controller burn out?

I put 60's in about 2 months ago. They work fine as far as I can tell but I'm Southern US so we don't really know what cold is down here. I can say check your wires running to the glow plugs. I had one work its way down on the manifold, she didn't glow very well shorted out.

If you buy a chip from heath or someone can't you have the glow times extended without adding another switch?

Also curious if its normal for the glow plug indicator to show the plugs are cycling on/off once or twice after startup?

Yea Bud, my glow plugs, when the controller was good, always cycled once or twice once it started so I would say that is normal. You probably don't need glow plugs down there in the heat and drought.

This is a good time of year to expound on this thread,.
i,m ready for glow plugs real soon too,. but there's so many hard and fast opinions,. who's right?

i remember the fast heat glow plugs guy coming on this forum and saying they were upgrading the design,.
chris1500,... Dieseldad, did you guys have an early set? where you running quick heats with a manual overide?
why are you a fan of bosch's, Rusty canuck?
Have they fixed the problems associated with early failure on the quick heats? or are they cleverly designed to fail 1 month after the 1 yr warranty period?
i,m also thinking about soldering the wires right to the spade terminals to make sure of a good contact,
so who's right? whats really better?
thanks
Nick

No replys to my questions yet?
i need a set of plugs now,..and i really want to make sure i get the best thing,.
Nick

I had an 'early' set....with override....

They were supposedly upgraded by WAP but I am not sure if that ever actually happened....

I have AC Delco 60G plugs now and will not put anything else in my engine - 'nuff said!

i would love to comment but still engine is outside of said truck. argh

I went over to Canadian Tire today to price out glowplugs and the Bosch's were $20 a peice. How much does GM want for the ACDelco's? I think I'd feel better with those in there than Bosch's, but I'd like to hear from Canadians which they like better.

When I replace the injectors, I read quite abit on GP's here and elswhere.

9G's, 11G's, 60G's, instaheats, etc. I settled on the 60G's. It's the stock GP for my 98 and its what I took out.

This is my first winter. Its been below freezing a couple times already. Its started right up. Time will tell if it was the right choice. I'm feeling prety good about it after the neighbors way up north are using them. Since my truck came out of the Milwalkee area and there is no override button, it should be ok.

Here's someone that has bought the Bosch GP.

http://www.dieselplace.com/forum/showthread.php?t=192928

Check out Autozone for the AC 60G's they have them for a good price. About 1/2 of Bosch and Autolite.

Check out Autozone for the AC 60G's they have them for a good price. About 1/2 of Bosch and Autolite.
I bought a set there today for $9.99 apiece.

How often are these things supposed to be replaced anyway? Mine were replaced when I bought the truck 5 years ago, it was starting hard so the dealer put in new glow plugs and two new batteries. It was 5 years old with just over 100k on it at the time. Now it is another five years but only 40k more miles and it's starting pretty hard. Going to do the injectors too, so I'm not really sure if the glows or the injectors are the cause of the hard start. Been running poorly the last few times I've driven it, so I figure the injectors must be on their way out.

Rockauto has the Bosch (p/n 80034) for $10.38 each, and the 60g's for $8.26 each. Prices are not including shipping which is usually reasonable from them. Plus there is the 5 percent discount code, a current one is 809906618368. Eight Bosch would cost me $84.76 including discount and shipping, eight AC Delco are $68.71 including shipping and discount. Given these prices, which is the better deal?