caddyon20s Posted August 23, 2007 Report Share Posted August 23, 2007 Hi, i bought a 99 deville and had to replace my engine 3 moths after i bought it due to head gasket, i got an used engine with 81 kmiles paid 2500 total labor and engine, when i saw all the reciepts from the mechanic shop i saw they use spark plugs that where 2.68 each that was 25 kmiles ago, i wanna replace all 8 but i dont know what spark plugs to get?? i have another problem too my exhaust smells pretty bad when i start my caddy it smell as if it was an old truk exhaust, could it be the bad spark plugs??? i checked all of my brothers cars and none of them smelled that bad as mine. please help!!!!! Link to comment Share on other sites More sharing options...
WarrenJ Posted August 23, 2007 Report Share Posted August 23, 2007 I doubt you'll find anyone here who will recommend anything other than genuine AC/Delco replacements. Too many have experienced problems going any other way. The same goes for spark plug wires. Any DTCs? Regards, Warren EDIT: Oops. DTCs = "Diagnostic Trouble Codes." Info available here: http://www.caddyinfo.com/readingcodes.html There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
caddyon20s Posted August 23, 2007 Author Report Share Posted August 23, 2007 as for the bad exhaust smell what could that be???? spark plug maybe??? the car has 190,000 kmiles on the speedometer replacement engine has around 100,000 kmiles Link to comment Share on other sites More sharing options...
caddyon20s Posted August 23, 2007 Author Report Share Posted August 23, 2007 sorry for so many questions, where can i get ac delco spark plugs orralleys???? autozone??? Link to comment Share on other sites More sharing options...
WarrenJ Posted August 23, 2007 Report Share Posted August 23, 2007 Any number of things might cause a "bad exhaust smell," but most of those things will set a DTC. Regards, Warren There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
WarrenJ Posted August 23, 2007 Report Share Posted August 23, 2007 Many here have lauded http://www.rockauto.com as having the best prices and delivery. I haven't had any experience with them. YMMV. Regards, Warren There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
Ranger Posted August 23, 2007 Report Share Posted August 23, 2007 I can personally vouch for Rockauto. Good prices and lightening fast shipping. That said, you should be able to buy A/C Delco plugs locally. As for the smelly exhaust, check for a leaky FPR. It is a small canister on the fuel rail. With the engine running, pull the vacuum line and look for fuel leaking from the nipple. If fuel is present, replace the FPR. Link to comment Share on other sites More sharing options...
caddyon20s Posted August 23, 2007 Author Report Share Posted August 23, 2007 thank a lot for ur help,,, would i see any inprovement by changing my spark plugs to ac delco??? i get arround 18 to 19 miles to a gallon. Link to comment Share on other sites More sharing options...
Terminus Posted August 23, 2007 Report Share Posted August 23, 2007 18-19 mpg around town? That's pretty good, and it wont get much better than that. On the highway? Not so much. If your plug wires have never been changed, change them. It should help tremendously. 95 Eldo---Sold! 05 STS4-WooHoo!!!!! Link to comment Share on other sites More sharing options...
Ranger Posted August 24, 2007 Report Share Posted August 24, 2007 thank a lot for ur help,,, would i see any inprovement by changing my spark plugs to ac delco??? i get arround 18 to 19 miles to a gallon. Am improvement in what? Mileage? Probably not. Link to comment Share on other sites More sharing options...
caddyon20s Posted August 25, 2007 Author Report Share Posted August 25, 2007 18 t0 19 thats town and highway together i use premium gas, like i said my car has the cheap spark plugs 2 dollars and something each, would replacing them to the ac delco ones wich are like 6 dollars a pece make any difference??? Link to comment Share on other sites More sharing options...
Ranger Posted August 25, 2007 Report Share Posted August 25, 2007 No. Link to comment Share on other sites More sharing options...
KHE Posted August 28, 2007 Report Share Posted August 28, 2007 18 t0 19 thats town and highway together i use premium gas, like i said my car has the cheap spark plugs 2 dollars and something each, would replacing them to the ac delco ones wich are like 6 dollars a pece make any difference??? They won't make a difference now but in 10 or 15 thousand miles, the cheap plugs will wear out and need replacement. The factory plugs are the dual platinum tipped AC's and sell for $5.50-6.00 each but last over 100,000 miles. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
caddyon20s Posted August 28, 2007 Author Report Share Posted August 28, 2007 so since ive drove with the cheap plugs 2.26 each for almost 25 kmiles do i need to replace them??? Link to comment Share on other sites More sharing options...
JohnnyG Posted August 29, 2007 Report Share Posted August 29, 2007 Any number of things might cause a "bad exhaust smell," but most of those things will set a DTC. I don't think a leaking injector will set a code. I know a leaking FPR won't set a code. My first bet is on the latter. Never underestimate the amount of a persons greed. Link to comment Share on other sites More sharing options...
Ranger Posted August 29, 2007 Report Share Posted August 29, 2007 so since ive drove with the cheap plugs 2.26 each for almost 25 kmiles do i need to replace them??? By now the gap may have eroded so it may be time to at least regap them. Link to comment Share on other sites More sharing options...
mike5514 Posted August 29, 2007 Report Share Posted August 29, 2007 If your plugs are platinum and the car drives good which is unusuall you should be good to 50000 mi. saying that the smell is probably a emission problem the plugs can not be ruled out nor the fpr and the oxy sensors first thing to do is check for codes in the history (off/warmer) Mike Link to comment Share on other sites More sharing options...
BodybyFisher Posted August 29, 2007 Report Share Posted August 29, 2007 One of the side benefits of putting the platinum plugs in and letting them go 100K miles is that you DON'T have to keep setting the gap or changing them. The LAST thing you want is buggered up spark plug threads in the head... Put the platinum in and forget about them. If those are standard NON PLATINUM plugs they will need gapping and or replacing at 15K max, the voltage is so great with these coils that they won't fare well. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
caddyon20s Posted September 4, 2007 Author Report Share Posted September 4, 2007 ok here is a link to oreilly auto parts wich spark plugs should i get??? do they come pre gaped?? 99 deville thanks. oreilly auto parts spark plugs 1999 deville Link to comment Share on other sites More sharing options...
caddyon20s Posted September 4, 2007 Author Report Share Posted September 4, 2007 here is the link copy and paste it on a now browser thanks. http://www.oreillyauto.com/EW3/DisplayTheP...mp;newPage=true Link to comment Share on other sites More sharing options...
WarrenJ Posted September 4, 2007 Report Share Posted September 4, 2007 Just buy OEM DELCO plugs. Pre-gapped plugs need to be gapped. That's life. Surely you wouldn't buy "pre-gapped plugs" and simply just screw them into your engine without first checking them. Would you? Regards, Warren There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
Texas Jim Posted September 4, 2007 Report Share Posted September 4, 2007 Never put plugs into an engine without at least CHECKING the gap. All it takes is to be dropped or bumped on the end kinda hard, even while still in the box, to knock the gap off. You don't know how the new plugs have been handled. Plugs are a critical element to proper engine performance. I agree with Warren. OEM AC Delco plugs. There is usually a small box of the little round gapper things sitting by the cash register. About the size of a silver dollar. About 99 cents. I prefer a wire gauge gapper, then a feeler gauge then the round gapper.. in that order. Link to comment Share on other sites More sharing options...
caddyon20s Posted September 4, 2007 Author Report Share Posted September 4, 2007 so is this the right one Oreilly auto parts oreily auto parts spark plug 99 deville Link to comment Share on other sites More sharing options...
KHE Posted September 4, 2007 Report Share Posted September 4, 2007 The correct plug is the AC Delco 41-950. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
caddyon20s Posted September 4, 2007 Author Report Share Posted September 4, 2007 thanks everyone thats what i got at the auto parts 41-950, i checked them up for gaping they come pre gaped at 50 so i didnt need to gap em up. Link to comment Share on other sites More sharing options...
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