Driving with one injector not firing--What problems could this cause?

[yoesh1]

Alright, let me start off by introducing myself as the owner of a 1992 240sx se, which I got off a friend of mine for an awesome price. He was going to buy another car because the #3 injector was bad and the car needed tires very badly, and it had failed inspection. He's not mechanically inclined and opted for a miata soft top from a couple generations ago [also a fun car]. He drove the car, even raced it running on only 3 cyl. for a pretty substantial amount of time, like months or longer.

Unfortunately for him, his miata is now having pretty serious engine problems. I, on the other hand, with help from a FSM, this site, my uncle's advice and tools, have managed to do what I would consider a fair amount of work on my car, which includes replacing all 4 injectors with remanufactured ones

The engine is running strong now, the drastic and worrying SHAKE is gone, the engine runs smoothly, my idle is back up to a normal level, and my power was drastically increased. In fact, I had never driven the car before I bought it, but having ridden in it many fun afternoons, I realized what driving was really supposed to be all about. Responsiveness, agility, and rear wheel drive are a wonderful combination. The 240 is my personal perfect car as it is so well balanced between fun and practicality. It has class, style, and heritage that is unmatched among japanese cars in the US, imo.

BUT ANYWAY, sorry to stray from the topic...

My question is this; what can I expect to have to replace as a result of the excess stress caused to certain parts of the car by the bad injector? Should I check the motor mounts? Any hoses specifically prone to stress on a shaking engine? I've found one cracked hose I will be replacing immediately that comes right off the head.

I started to notice the timing chain rattle at idle, but I think it's going away and could altogether disappear once a tune up is finished and things are running the way they should be.

I love my car. Buyin 400-500 dollars worth of parts this weekend. I'll shut up now.

[scottydog]

Just drive it like you stole it!

[Vegascorbin]

I would just do a good visual check of all the hoses etc. At the age of the car some are probably bad reguardless of the shakeing. Check the motor mounts as you sugested along with the transmission mount.

If you do not know when the fuel filter was last chagned I would do that along with a general tune-up. Probably a good time to check how the brake pads look also.

The timing chain rattle is never going to go away until you replace it. If it is just starting to make noise then you hav etime to work it into the budget. You will have to replaceit evntualy.

Welcome to NICO and enjoy the ride.

[yoesh1]

Fuel/Air : Fuel FilterPARAUT Part # 164000M200 {Fuel Filter} $9.42 $0.00 $9.42

Engine : Oil FilterGENUINE NIPPON Part # 1520860U00A {Oil Filterold version of 1520855Y00 #15208H8916} $2.42 $0.00 $7.26

Ignition : Spark PlugNGK Part # 2382 {Standard Plug #BKR5ES11}DOHC {.044 gap}+ Sold in packs of 4; Price reflects cost of each individual item, not the pack $1.69 $0.00 $6.76

Wiper & Washer : Wiper BladeTRICO Part # 21200 {Economy Plastic Blade - 20" (510mm), 7/9mm Hook Type, 9x4 Hook Type, 3/16" Side Lock, 1/4" Side Lock}FrontRear $3.72 $0.00 $7.44

Emission : PCV ValveFRAM Part # FV337 {PCV VALVE PCV Valve} $3.30 $0.00 $3.30

Brake/Wheel Hub : Brake PadRAYBESTOS Part # SGD422M {Service Grade; Semi Metallic} $14.84 $0.00 $29.68 WAGNER Part # ZD272 {QuickStop} $14.66 $0.00 $29.32

Brake/Wheel Hub : RotorRAYBESTOS Part # 96066R {Professional Grade Outside Diameter 10.16" / 4 Bolt Holes} $18.02 $0.00 $36.04 RAYBESTOS Part # 96071R {Professional Grade Outside Diameter 9.9" / 4 Bolt Holes} $21.79 $0.00 $43.58

Suspension : Stabilizer Bar LinkMOOG Part # K90247 {Sway Bar Link Kit}Rr Susp $7.82 $0.00 $7.82

Brake/Wheel Hub : Caliper Repair KitDORMAN Part # D351458 {First Stop}Front ; Bore = 57mm; w/ABSFront ; Bore = 57mm; w/o ABS; From 12/91 To 5/92* Non-stock item--shipping delayed up to 2 business days $1.90 $0.00 $3.80

Fuel/Air : Air FilterPRO-TEC Part # 274 {ProTec Air Filter Panel} $3.01 $0.00 $3.01

Brake/Wheel Hub : Hydraulic HoseDORMAN Part # H38694 {First Stop}Front; w/o ABS Or Convertible* Non-stock item--shipping delayed up to 2 business days $11.24 $0.00 $22.48

Emission : Oxygen SensorSTANDARD MOTOR PRODUCTS Part # SG9T {TRU-TECH}UPSTREAM SENSOR $13.32 $0.00 $13.32 DENSO Part # 2341013 Front $23.89 $0.00 $23.89

Ignition : Distributor CapSTANDARD MOTOR PRODUCTS Part # JH178T {TRU-TECH}MITSUBISHI $6.28 $0.00 $6.28

Ignition : Distributor RotorSTANDARD MOTOR PRODUCTS Part # JR146T {TRU-TECH}MITSUBISHI $4.11 $0.00 $4.11

Ignition : Spark Plug Wire SetUNITED IGNITION WIRE Part # 9482 {PREMIUM Genuine Packard/Delphi Silicone Wire}SE $34.79 $0.00 $34.79

This is the order I'm going to place tonight. I have already purchased the expensive parts, injectors and tires... This, misc. replacement hoses, some seafoam and fresh oil should have her purring. I need to do my brakes for inspection reasons.