Question about 1993 BMW 3 Series

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No spark on # 1 cylinder and weak spark on # 3 cylinder.

Have bought new coil, wires and plug for my 94 318i.

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  • frankfam Jan 09, 2009

    Doesnt have a distributer. Has a coil pack. I have changed the wires around to see if they were bad and they are not. It is not sending anything out to the spark plug on # 1 from the coil pack and has weak spark on # 3. The car runs it is just missing.

  • Scott  Moore
    Scott Moore May 11, 2010

    does your car have DIS or a Distributer?

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  • 113 Answers

Check the multiplug connections on the dme control unit in the e-box in the engine bay on the right hand side as it has been known that corrosion can damage the pins

Posted on Jan 19, 2009

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1 Answer

Isuzu 2ltr bakkie nmbr 2 and 3 no spark?


post 3, adds, no spark , 2/3 (and still no year, no country stated)
bad coil pack?
wired wrong, this pack.
no photo of the engine, nor real name of it, Petrol.
btw, we dont have "BAKKIE" here. not a single one.
nor KB trucks, either.
what spark system this car has, im clueless.
4 coils or 1 pack.? if one pack , replace all spark wires
if one pack system , if either 2/3 wire opens, both cylinders go dead. try new spark wires. high voltage,

or you measured spark wrong, on 1 pack car.
it takes 2 spark plugs do do that. 2 good plugs and 2 good wires,
#2 and #3, due to the fact they are wired, in SERIES.
see its called wasted spark system, with 1 coil pack and no distributor..
the testing is unique. on this, setup.
try new spark plugs, gapped correctly
and 4 new HV wires,
I bet its go. if not the coil pack is toasted.

Dec 05, 2016 | Isuzu Cars & Trucks

1 Answer

What is the Wire Order with distributor?


theres no distributor and the firing order for your 3.8 is 1-6-5-4-3-2-the following link shows the coil pack
Buick General Motor 3800 V6 Engine Firing Order DIS IDI ignition timing 3.8 Buick Engine Coil Pack Firing Order Spark Plug Wire Location Which way do the spark plug wires go on & what cylinder is what?
.
For the Buick V6 231 3.8 liter turbocharged engine:
.
Answers!
.
Firing order:
1 - 6 - 5 - 4 - 3 - 2.
.
Spark plug wire location on coil pack:
.
Closest to the back of the car, left to right: 1 - 5 - 3.
Closest to the front of the car, left to right: 4 - 2 - 6.
.
Spark plug wire location on engine:
.
drivers side, front to back of car: 1 - 3 - 5.
passenger side, front to back of car: 2 - 4 - 6.
.----and this link shows the coil pack to cylinders
.
3 8 Buick Turbo Engine Coil Pack Firing Order Spark Plug Wire Location

Aug 15, 2015 | 1987 Buick Regal

1 Answer

What would be causing a weak spark? new plug in it could it be my stater or just a bad coil checked all wires and ground points


All spark is generated from the coil. You didn't state year make model. The vehicle may have only one coil and ignition wires or it could have a coil for each cylinder? Suspect a weak coil or high resistance in a plug wire causing this issue

Jul 09, 2015 | Cars & Trucks

1 Answer

I have a 2003 jeep grand cherokee, It started


wow, no engine option stated, and no DTCs.

4.0L I-6 or 4.7Liters?

WHY DO THAT FIRST. $$$$ parts first.

why not do a tune up first.

you swap in the most expensive parts first? ouch,

The PCM tells you when ckp or cmp fail, with DTC codes

so its not that. but you never posted ALL DTC errors. why not do that.?

do a real tuneup? heat (spark plugs, filters.)

if you have P030x errors,

eg: p0301 is cylinder #1 is misfiring (3 ways to do that not JUST spark)

eg: P0300, random on all cylinders. (fuel mix wrong) or never tuned up.



Misfire 101; (example P0301 DTC)

P030x codes, are all just about spark, misfire is caused by 3 things, (at least)

1: sure spark. weak. (tuneups work as does hV wires sets if no COPS) if 1 cop is bad move it to other location, does failure follow the move>???????? buy new cop boots if engine has cops.

COPS means coil over plug, so v6 has 6, v8 has 8.

coil packs have 3 coils inside for v6 and 4 for V8. called wasted spark to any tech.

2: low compression, think of your v6 (is it) as 6 engines, not 1.

3: wrong FUELING rates. including air leaks to 1 cylinder.

if engine has EGR that too, will cause gross misfiring.

so can an air leak near one intake runner, causing 1 cylinder to misfire.





why not scan it with a real scan tool that can see ALL jeep codes

then post all DTCs found. both idling and driving for 45mph or 1/2hr.

with these facts and what engine is there we can do the remaining tests.

free book



http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service







The tune up is this and filters.

do the tune up, new wires, and plugs using correct spark plugs not some bs, magic ones, use spec, plugs first. its in the manual.

then HV wire set on 4.0L,

if cops V8 , 4.7L try new boots on them. or swap them to find bad one.

the USA car V8 has coil on plugs





misfire means ONLY that this cylinder has weak COMBUSTION

its not weak spark only, that is only 1 cause of poor combustion.



post DTC\'s driving and we can fix it

the best tool is the

Innova 3160 scan tool, that is what I use on home cars.

it does all jeep codes, ALL.

i can drive , and scan and log DTCs.

and gather lots of facts on errors.

that is always the best way,

you can not fix cars today with out owning a scan tool.

unless , luckiest man on earth. (guessing)

Sep 17, 2014 | 2003 Jeep Grand Cherokee

1 Answer

My suzuki vitara 20v6 number one plug is not


its a 2.0L V6 called the h20 engine
in some countries, this engine uses a coil pack with 1 coil per
2 cylinders, this magic is called Wasted spark.
some have 3 coil packs for 6 cylinders
others have 1 huge pack with 3 coils inside.
what you have , im totally clueless, (no country stated, dig?)

but no matter, the pack is bad, or the wire that is FINE, is not FINE
no human on earth can test a HV wire, no body.! ( 1 out of 4 sure)
that is fact, (sure if opened) but what about the other modal failiures.
1: insulation breakdown.
2: resistance wrong, (say too high)
3: intermittent.
4: dead open, anyone can test this, its a no brainer. if ever.

this fact is why the 60k mile tune up, will fix it. new wires.
new HV wire set, I run NGK MAG wires, they last 2x longer.
easy.

no only that. with wasted spark , the other plug in the loop can cause your dead plug to be dead. and its wires too.
that is because it is a LOOP

if both plugs are new and both wires are new
then the coil is bad.
coil packs are usually way more expensive that $2.49 spark plugs
or $20 wires.

Aug 27, 2014 | Suzuki Vitara Cars & Trucks

2 Answers

2008 Cadillac CTS returning P0303 after replacing spark plug and coil pack


Error Code: P0303
Description:
Cylinder 3 - Misfire Detected
Possible Cause:
Wiring harness, igniter and fuel injector connectors.
Ignition system. (Spark plugs gaps)
Fuel injector No. 3.
Fuel pressure.
Running out of fuel.
EVAP canister purge valve.
Evaporative emission system.
Low compression, cylinder No.3. (check valve clearance and throttle plate for excessive wear)
Engine control module (ECM).

Feb 27, 2014 | 2008 Cadillac Cts

2 Answers

Have a misfire on cylinder 3


Hello
Here is what to check let me know if you need help checking this out
most common misfire causes on the cars I've worked on have been:
  1. Spark plugs
  2. Spark plug wires
  3. Ignition coil
  4. Fuel injector
  5. Wiring to fuel injector
  6. Timing Belt
  7. Vacuum leak or stuck open EGR
  8. Contaminated fuel or bad fuel pump
  9. Weak compression
  10. Blown head gasket

Jul 14, 2010 | 1998 Dodge Durango

1 Answer

Spark on only 2 of the 4 cylinders


On dis ignition systems if you have an open circuit plug wire you will lose spark on both cylinders of the coil. So however you are checking for spark,(screwdrivers or spark testers) Check cylinders 1 and 4 at the same time. A good way to eliminate the possibility of a bad plug wire is to take both wires off the coil and start the engine. Spark should jump from the coil tower to the coil mounting bolts. If it doesn't replace the ignition module.

Jun 11, 2009 | 1990 Oldsmobile Cutlass Calais

1 Answer

2004 Neon Weak Spark on #1 Cyl.


Did you try swapping plugs & wire with another good cylinder. Maybe bad plug or wire, even though check says wire good.

Jan 24, 2009 | 2004 Dodge Neon

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