Okay thanks will try that in the morning

 

Okay we switched the coils as you suggested and it didn't change the PO303 code and swithced the fuel injectors still the same PO303 code

 

Plugs broke or bad.

 

That is what my husband was wondering if it was bad plugs from autozone guess it won't hurt to get some better ones and try it thanks for the input

 

Pull #3 plug and look at it. There aren't any plugs better than Motorcraft - if something is wrong with #3, just replace it with another one.

Good luck. Not the best choice, when you can get a full set of OEM quality on Ebay for about 80 bucks shipped.

 

here is a link to the dg508 coils on ebay for the 4.6
http://shop.ebay.com/?_from=R40&_trk...All-Categories

 

I take that back , well sort of, - it's still possible and worth checking, but I thought you had a 3 valve when I posted.

BTW- Good find Matt! - Here's another online store that sells GOOD coils -

WOE! Global Automotive out of buisness??? -

http://myworld.ebay.com/ebaymotors/global-automotive

That's news to me.

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Well, these guys sell good coils as well -

http://cgi.ebay.com/ebaymotors/NEW-I...#ht_8600wt_939

 

Thanks guys for all the input I never thought of buying the parts on ebay.
Thanks for taking time for me

 

those porcelain casing crack easy i had 4 crack on a 5.3 subarban the other day at work ... ac delcos but plug casing are not hard to crack

 

Hey J, is DG508 the ones for our 5.4L engines? I need to replace my cops...

 

Hey, how are yuh Del, - I have a couple boxed I could send yuh. Didn't need em. But yea, 508's are the ones.

 

Well I think it's time I replaced all 8 anyway so I thought I would just order a whole set from that ebay store you posted a link to. My truck just started running like **** and I'm gettting a misfire code on cylinder 1 and cylinder 4. That is about the only thing I haven't replaced on the truck and it does have 185,000 miles on it now...although, it probably has something to do with my ignorant *** taking the hose to my engine bay the other day even though I know better lol

 

Yea , the hose will do it every time lol. I've got about 2 dozen good ones, but only 2 are new/ rest used. I'll send the 2 new and 6 used if you want them - No charge, but yea, your most likley better off with a new set.

You saved my *** a big headache, I owe yuh buddy.

 

Anytime, you have helped me out a ton in the past so it's the least I could do. I really appreciate the offer, but I was reading another thread where you mentioned in your post that either replacing the COPs or replacing the fuel injectors really woke up your high mileage truck. Since those are about the only two things I haven't replaced on my truck (within reason), then I thought it would be a good idea to see if it makes much difference. Are those COPs on that ebay store ford motorcraft? and that is $80 bucks for the whole set of 8 right? So if I switch some of my cops around then the misfire code should change to different cylinders if it is indeed the cops right? It isn't possible that spraying it down with water would cause water to actually get inside past the spark plug right?

 

Exactly, that was a turning point. I have to say it was more noticeable performance wise, than the Long Tube header install, but only because my coils and injectors were old and no longer functioning at peak or as they should be. I think I was at 165,000 when I replaced the Injectors and the Coils.

I put allot miles on since then, I'm at 262,000 now and I updated the coils again last winter @ 257,750 miles.

I have 2 sets of Motorcraft and two sets of Global that I purchased in the past. Out of all of them, my only bad coils are from the Motorcraft sets. I not saying one is better than the other, just that there's no difference.

The last update (this past winter), I purchased the V10 pack (package of 10 coils) so that I would have 2 extra on hand, - that's why I have two still in the box , - haven't needed them.

Since Global Automotive is no longer a registered user on Ebay, -Uneek Supply would be the go to. Global and Uneek both sell/sold "Gama" DG508's which are the proven to be trustworthy coils.

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Injectors

Back then , @ 165,000 miles, -I purchased a new set from a Romeo crate motor that was parted out. Bosch 19's Type(design) 3's which I'm still running today.

Here's an old pic of that install -



At that point I was running Motorcraft coils, - had problems with them and swapped them out for the $80 Global Auto set on ebay a few months later.

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So, I would purchase Coils from UneekSupply if it were me -

The injectors? I'm not sure, but I know Ebay sells a bunch. Either Sonic Cleaned or New. "New" (take-offs) if you can find them. Just make sure you purchase injectors with the right connectors or your harness connector won't match. There's only two types. Here -



The connector on the bottom of the pic is what you have. And that's a stock injector in front of the type 3. I purchased the WRONG ones back then and had to change the harness, - you can avoid that by purchasing Type 3's with the right connector.


Here's an additional pic with more info -




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They do make conversion pigtails if you can't find EV1's, but their 10 bucks a pop



I'll save you a little time - Injectors currently on ebay, -

http://shop.ebay.com/i.html?_nkw=FOR...TORS&_osacat=0

You need the Orange 19 lb. Stick with 19's, changing Injector size will only make your fuel ratios unpredictable.