Question about 1999 Oldsmobile Silhouette

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Looking for the fireing order for a 1999 olds silhouete

My buddy put new plug wires on the back side of this vehicle at night with not much lighting think they put the order on wrong

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"1st coil terminal as you stand at front of car L>R 5-2-3-6-4-1 2nd firing order of spark plugs as you stand at front of car L>R rear bank (1) (towards firewall) 1-3-5 front bank (2) L>R (side to radiator) 2-4-6 (this is for the 3.4L V6--204cubic inch engine) The firing order is 1-2-3-4-5-6 Hope this helps , keep me posted, be glad to help

Posted on Jun 16, 2009

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Fireing order is on the intake manifold . you need to find number one piston .also ckek on the inside under the hood should have spark gap and maybe firing order

Posted on Jun 16, 2009

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I don't know your year--make--model? You should be able to remove dist cap, crank the engine, watch which way the rotor turns, then you know the direction of rotation. Most chevy rwd v8, firing order, 18436572. The driver side bank is odd numbered, 1357.
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How do I replace the sparkplugs


Buy the appropriate spark plugs from your auto supply store. They will need to know your engine size (# of Cylinders Etc.) as well as the info you have supplied here (yr make model) Gap the new plugs to manufacturer specs. Follow the plugs wires from the distributor to the plugs. Remove plug wire and unscrew one plug at a time so you do not mix up the firing order and replace with the new plug. Put wire back on. You may want to replace the distributor cap and rotor at this time as well. Be sure, again not to mix up the order of the wires. Mark them in some way so you know how to put them back on the new cap in the same order they came off of the old cap. Medical tape and a numbering system works well. Also use a felt pen to mark the old and new caps to correspond to the numbers on the tape. Does this help? Let me know. Thanks.

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If you can get under the dash with the seat pushed all the way back, you can put a drop light under the hood, get under the dash and look for the light coming in. If you see anything.....PLUG IT!! :-)

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put the cylinder one on TDC
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Aug 24, 2009 | 1999 Dodge Dakota

1 Answer

Change the spark plug for 1999 pontiac montana


Ok, based on the firing order from your vehicle there are (6) cylinders, and (3) are on the front of the engine and (3) are on the back. I have never even looked under the hood of one of these types of vehicles, however, You MAY need to remove the large plastic engine covering (not sure for your vehicle). If that is the case you may have to remove the engine oil (tube). The cap that you open up to add oil, twist and pull on the actual tube and it should twist off (if needed on this vehicle). Once this is removed if requiered on your vehicle, you can then remove the large plastic covering to have access to each cylinder. Once the large plastic covering is removed, put the oil fill tube back in place for the moment so no contamination gets in your engine. I would start with the back side first because that is hardest. I checked on Autozone.com and they have it listed for this vehicle that the iginition coil is set up on the left side. You should see six wires coming from this area with (3) going to the front and (3) going to the back of the engine. Start on the back side with the whichever of these wires/cables goes to the left side of the back of the engine. Please only do one at a time to avoid confusion as to the placement. What I would do in all honesty if you are doing the tune-up is to replace the spark plug wires as well. What I have used on all of my vehicles and have had great success is NGK plugs and NAPA auto parts has plug wires Belden Maxx (this is only a suggestion and I am only sharing what has worked well for ME). OK, prior to starting what you will want to do is take each individual plug one at a time, and using a spark plug gap tool (readily available at all parts places) Place the non-porcelin end (the one that has the arc in it) into the gap tool at the lowest end and slide it around until you have reached the required gap. For this vehicle it is .60 Even if they tell you at the factory it is pre-gapped and you don't have to check it, believe me it is always a good idea. I just did a vehicle and all (6) were not gapped correctly. Put each one back in the box until needed. Once you have done this,starting on the back of the engine left side find the spark plug cable/wire that goes to that side and where it goes into the engine it will have an end with a boot on it. This covers the spark plug. Twist this boot off the spark plug, it may take some effort. Once that is off if you are replacing the spark plug wires take this one and match it up with the new set (They will be different lengths). Now for the fun part, removing the plug. Using a spark plug socket (available at parts places, has rubber on the inside to grip, and protect the socket) a small extention and your ratchet, place this over the plug and apply pressure until the plug begins to turn. Once you have the old plug out, place the new plug in the spark socket and thread it in by hand (it will be in the socket but don't use the ratchet yet. Once you have the plug in as far as you can by hand tighten it down with the ratchet (don't overtighten). Place the new or old spark plug wire (boot) over the new plug and move on to the next cylinder. Do each one the same way (ONE AT A TIME, to avoid confusion). This is a long explanation but I hope it will help someone...Thanks

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Sounds like you got two wires mixed up. Check your firing order. If not that, then you dropped a spark plug and flattened the gap. If it's a V6 the firing order is 165432. If it's an 8, it's 18726543.

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