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D21

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Question
Driver's side door won't open
If the driver side door will not open then most of the time this is caused by a broken door latch that should be repalaced. If neither handle works then the latch is broken inside of the door or the...
Question
Doorlock and door opener broken
It sounds like the door latch needs to be removed and replaced. The door latch and locking mechanism are built into the same part and can easily be replaced. I would recommend having a technician from YourMechanic come out and...
Question
nissa d21 z24 carburated strange rattling noise
Hello. In regards to your idle speed issue, I would recommend tuning and adjusting the carburetor until the correct idle speed is achieved. As far as the rattling noise goes, firstly I would check to make sure that the engine...
Question
Truck won't start unless I remove the fuel pump relay
Hey there. This is a sign of a failing fuel pump or potentially a faulty power connection to the fuel pump. As you know, if the fuel pump fails to supply adequate fuel pressure to the motor, this will cause...
Question
What happens if i replace the catalytic with a thrush muffler and put a DC sports exhaust about 2 feet away from the thrush.
Removal of the catalytic converter on a car that will be operated on the street is very illegal, and can get you a huge fine from the EPA. Also, since most modern vehicles are designed to run with some system...
Question
10 amp fuse keeps blowing
Hello. If your meter fuse is blowing when you put the vehicle into drive then it is likely that your vehicle has some sort of wiring issue. If the issue occurs when you shift into drive, then it is likely...
Question
Brake lines have air, bled many times
Hello. Moisture in the brake fluid is being boiled off as steam when your brake system temperature gets above 212 degrees (at sea level). The steam re-condenses as water in the system BUT air pockets can be created and remain...
Question
Manual transmission makes noises - 1994 Nissan D21
Hello. It sounds like you have a gear, bearing, bushing, or other rotating component issue caused by wear. At that mileage, really the thing to do is just simply rebuild the transmission which is not particularly difficult since it is...
Question
Truck is running rough, loses power, backfiring noise - 1994 Nissan D21
Hey there. I would check fuel pump output and condition of fuel injectors (flow rate and solenoid resistance). After that, I would evaluate the ignition system, including distributor, plug wires, timing. If you would like to have this checked for...
Question
Q: High idle problem.
This may be a sign of a vacuum leak. A vacuum leak can be one of the most frustrating and difficult problems to diagnose. High idle speed is a common sign and stalling is another. Confirmation of an engine vacuum...
Question
The clutch lever that the slave cylinder pushes is not pushing/springing back
It sounds like you may have to replace the clutch. Clutches can fail in a number of different ways and exhibit a multitude of symptoms. Most people are acquainted with clutches that slip from simple wear, but it sounds like...
Question
My car won't shift into 3rd, 4th, and reverse.
Hi there. The gears 3rd and 4th are both on the main shaft inside the transmission. Those gears have a synchronizer that connects the gears together. The reverse gear does not have a synchronizer to make the gear work. It...
Question
Ignition timing out of sequence.
Hi there. First you would need to know the firing order for the electronics on the distributor. The distributor number one on the firing order is the terminal on the right side at the front of the vehicle. Since you...
Question
How do I remove heater core in a 1994 nissan pickup
Hello, thank you for writing in. The heater core is a difficult component to get to. Typically, you must go through a lengthy process of accessing the core from behind the dash. Once you have access to it, you can...
Question
My truck is backfiring when idling and when accelerating will not drive.
You may have a broken valve spring or sticking valves and will need to have the engine compression tested to see if one or more cylinders are low on compression and may need to have a valve job done. ...

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