Suzuki samari JX 1987 engine miss.

Did you set the gap on the new plugs to factory settings before putting them in? If not, they may not be the right gap.

Also, any number of other issues are possible such as:
1. Wrong plugs
2. Damaged wires when removed from old plugs
(Plug connector wires can be easily damaged when removing from old plug if just pulled off and special tool isn't used.)
3. Stripped threads on plug allowing gas blow by and poor compression.

No. (2) seems to be the most likely cause without knowing anything else. A new set of ignition wires after 15 years of service is not something frivolous to do and money well spent.

vast checks. really!
EGR stuck open?
but can save the stall, with a fast right foot action,
using the wrong cap with a non suz, missing vacuum breaker will stall the pump an then engine.
stalls can be.
1: engine issues, (compression bad on one or more cyl.)
2: bad spark
3: bad fueling. in that order.
if compression good and spark at all cylinders are good.
the you check fueling.
1: are spark plugs dry , white or black carbon, and/ or dripping in fuel?
reading spark plugs works on all gas engine. 100 years span. to now.
Google how to read spark plugs.
this engine is EFI. and as such can do lots of things.
leaking injectors. clogged , or dead.
low fuel pressure.
too high fuel pressures.
at the least

Hey 94 TOY...

When did the problem start? Before you changed the wires and plugs? Or did it start, AFTER you changed the wires and plugs? Did the problem remain the same BEFORE & AFTER you made the changes?

1 - If the TOY ran fair to Okay before you did the work, then you may have done something wrong when you made the cahages. Check for correct plugs and firing order. Check for cross wiring. With engine runing pull one plug wire off each plug one at a time. Each pulled plug wire will slow down the engine. When you pull a plug wire that doesn't react and does not make any change ON or OFF that cylinder Plug.
Then that cylinder is not firing.

2 - Check for spark at that wire. If you do-not have Spark there, But the other wires do... the wire going to that cylinder is BAD.

3 - If you have the correct firing order and spark at all cylinders then the cylinder that did-not change the speed of engine has a compresstion problem. Bad valves, Piston or rings are bad... Major engine work and Major repair bill for the repair job.... GOOD LUCK....

The car computer does the firing of the spark plugs based on info provided to it by various sensors in car. Your mechanic is spot on. Ouch!

Engines Firing Order: 1-8-4-3-6-5-7-2Distributor Rotation: Clockwise

FIRING ORDERS NOTE: To avoid confusion, remove and tag the spark plug wires one at a time, for replacement. If a distributor is not keyed for installation with only one orientation, it could have been removed previously and rewired. The resultant wiring would hold the correct firing order, but could change the relative placement of the plug towers in relation to the engine. For this reason it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your book to reflect how your engine is wired. Fig. 1: 1987-91 2.5L engine Engine Firing Order: 1-3-4-2 Distributor Rotation: Clockwise
Fig. 2: 1992-95 2.5L engine Engine Firing Order: 1-3-4-2 Distributor Rotation: Clockwise
Fig. 3: 4.0L and 4.2L engine Engine Firing Order: 1-5-3-6-2-4 Distributor Rotation: Clockwise

Possibly bad spark plug wires, it's more commonly to happen the other way around with that occurring after running for a while but temperature surprisingly do effect the spark plug wires both hot and cold.

1987 Ford Crown Victoria 5.0L FI 8cyl

Duraspark Type Plug Wires
The spark plug wires used with the Duraspark type ignition system are 5 / 16 in. (8mm) in diameter to contain the higher output voltage. There are two types of wires used in this system, and some engines may have both types installed. It is important to properly identify the type of wire used for each cylinder before replacements are made.

Both types are blue in color and have silicone jacketing. The insulation material underneath the jacketing on some plug wires is a silicone layer separated by glass braid. The plug cable not incorporating the silicone layer is used where engine temperatures are cooler and are identified with the letter SE with black printing. The plug cables with the silicone insulation are used where high engine temperatures are present. These cables are identified with the letters SS with white printing.
Each spark plug cable, if original, is marked with the cylinder number, model year and date of cable manufacture (quarter and year). Service replacement wires will not have cylinder numbers, or manufacture date.


On any vehicle equipped with a catalytic converter, never allow the engine to run for more than 30 seconds with a spark plug wire disconnected. Unburned fuel in the cylinder may ignite in the converter as it is exhausted and damage the converter.

When removing spark plug wires, mark and tag the individual wires. Grasp, then slowly, twist the insulator back and forth on the spark plug to free the insulator. Do not pull on the wire directly as it may become separated from the connector inside the insulator. Special tools are available which can help ease plug wire removal, and prevent damage to a cable.

When installing a new set of spark plug wires, replace the wires one at a time so there will be no confusion. Start by replacing the longest wire first. Route the wire exactly the same as the original.



Fig. 1: 6 cylinder engine-240Firing Order: 1-5-3-6-2-4Distributor Rotation: Clockwise



Fig. 2: 8 cylinder engine-255, 302, 351, 400Firing Order: 1-5-4-2-6-3-7-8Distributor Rotation: Counterclockwise



Fig. 3: 8 cylinder engine-390, 427, 429, 460Firing Order: 1-3-7-2-6-5-4-8 DistributorRotation: Counterclockwise


Visit autozone.com (free register) for more details.

I hope helped (rememer rated this) Good luck.

If you have a mis-fire in your pistons, you need to change your spark plugs. And you might as well change your spark plug wires. Spark plugs can run you about... anywhere from $2 - $90. Take a trip to Advanced Auto Parts. You can get spark plugs for about $7 dollars a piece. With a 1.4 L engine you only have 4 pistons. Spark plug wires will run you a little bit more. Not sure. They are different for every car so im not sure