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Where is the purge valve for bleeding the air from a cadillac northstar engine year 1996. It is in a 1996 eldorado. I have been working on it and need to bleed the air from the system and don't know where the valve is.
Jim asked on 08/16/2008.
Usually when you mention "purge valve" on a vehicle, you are referring to the evaporative system. If this is the system you have in question, there really is no way to manually actuate the purge valve solenoid without using a diagnostic scanner or jumper wiring with a system schematic. If you are referring to a different system (fuel?), please write back. Thank you!
The PRO answered on 09/05/2008.
I have an old 87 Buick Park Ave. It has 89000 miles on it. I've had the fuel injectors replaced. The problem is that it takes too long for the gas to get to the carborator before it starts. Could it be the fuel pump? Once it starts it runs good. I think that it doesn't have enough pressure to keep gas up to the carborator.
TONY asked on 08/13/2008.
The fuel pump could definately cause your vehicle to have a delay in starting right up. You could also have a fuel pump relay that may not be energizing the pump correctly. But keep in mind though, there are several other components and systems that could also cause the same problem. I would recommend having an engine performance/fuel system diagnosis performed to be absolutely sure that this is where the problem lies. Thank you!
The PRO answered on 09/05/2008.
I have a 2000 Buick LaSabre Custom. Sometimes when I go to start the car, it will not start. I have to wait any where from 1-15 minutes before it will start or sometime I can put it in Neutral and it will start. What could this be and about how much do think it will cost to get fixed?
C asked on 07/23/2008.
On your 2000 Buick LaSabre Custom, it sounds like you are kicking some kind of circuit breaker. This means that you could have some sort of shortage. However, starting problems are sometimes a little difficult to pinpoint. I would recommend that you go into a shop where amp draw, as well as, starter, battery, and charging system tests can be professionally performed. We would be glad to take a look at this problem for you. Just give us a call at(706)868-1818. We are just across the street from the Evans Super Walmart.
Thanks,
Dale
The PRO answered on 07/24/2008.
I noticed on here you'd answered a question relating to gas octane level. I was hoping you could elaborate specifically for my situation.
I drive a turbocharged vehicle. It recommends I use 91 or above. I understand specifically on mine, and with research from howstuffworks.com that the level is because of when it ignites during compression. So would running a lower grade like 89, to save money obviously, actually cost me more in the long run?
I am concerned that with the turbocharger it would cause knocking and damage my injectors, coil packs, and in time my valves.
Is there truth to this, or am I safe to run the 89 and lose the horsepower by it igniting sooner?
Brian asked on 07/22/2008.
You are right on with thinking that using a lower octane fuel will cause knocking (pre-ignition/spark knock), but there are a lot of mixed feelings on whether you are going to cause damage or not. If your vehicle is designed to run on a higher octane fuel, usually performance engines, it
The PRO answered on 07/24/2008.
I have the last year they made the boxy looking Jeep. It ran hot and we had to replace the head, the waterpump and radiator. It still runs hot sometimes when the airconditioner is running.
What do you think is causing it? Did the people who redid the head gasket not do a good job? Thanks for your help.
Lewis asked on 07/10/2008.
The 4.0L engine is a good engine. There are several things which could make this engine run hot. You may check the exhaust system: A stopped up catalytic converter will make it run hot. Do you have any check engine lights on? Engine timing could contribute to a hot running engine as well as a LEAN fuel mix. Also, check the temperature rating on the thermostat. The cooling sytem on this engine is relatively simple. It consists of the water pump, thermostat, fan, and radiator. If you take a close look at these components, you will find your answer.
The PRO answered on 07/15/2008.
I Have 1994SLS CADI seville with the northstar eng. It is running hot. I found out, by accident, that there is air in the cooling system causing the problem.I was able to get most of the air out by openning the radator top and letting it boil over. Is there a better way to do this?
vincent asked on 07/04/2008.
First of all, you need to find out where and how air is in
your cooling system. This system is closed and sealed to
help your coolant to be more effective in keeping your
engine cool. The air displaces the coolant and it will
run hot unless you bleed off the air. There is a purge
valve on the engine to bleed off this air pocket. However,
you need to know how air is getting into this sealed system.
The PRO answered on 07/15/2008.
I drove a Ford Explorer recently that had two big problems that concerned me, and I was curious as to what needed to be done to fix them.
The first is when the automobile turns it makes an awful squeaking sound. The guys at jiffy lube said it didn't have zerk fittings on the suspension to grease like other vehicles. They said it was common that some form of bushings got crushed on the explorers. Is this true? If not what should I tell a mechanic to repair it, without being sold random parts I don't need or want to pay for.
The second problem is after it has been sitting for a while it barely starts, and if it does it will shut off without holding the gas down to keep the tachometer above 2000 RPM. The owner claims it has something to do with the fuel injectors as after they put fuel injector cleaner in it, the explorer starts right up. What do you think the problem could be, and what would it cost to repair something like this?
Randall asked on 06/26/2008.
You have asked two questions. The answer to the first: This is a common problem on many modern vehicles. It's called grease fittings. Many vehicles today are greased at the factory and can not be serviced only replaced. When ball joints get dry, they squeal (as well as struts, control arm bushings, etc). Find a reputable shop that will: Listen to you and your problem, do a thorough inspection up on the lift under the car, let you know up front what it's going to cost, get your approval, test drive the vehicle after it has been repaired, and give you a warranty for all work performed.
The answer to your second problem will take us in two directions: Fuel (which I suspect) or Fire. To give you an accurate diagnosis I would need to know the year, make, model, engine size, VIN, etc. On the fuel side, it could be a fuel filter, a fuel pump, fuel pump relay, etc. On the electrical side, it could be a crank sensor, mass air flow sensor, etc. If the car is above a 1995, it has On Board Diagnostics (OBD) and a Check Engine code/s could be stored and retrieved with a scanner. Another quick and simple test, is a fuel pump pressure test at the fuel rail. Fuel injected engines require much more pressure to fire the fuel injectors. I hope this gives you some direction in which to look/test.
The PRO answered on 06/26/2008.
The check engine light keeps coming on in my truck. I took it to one of these places and had them hook it up to their diagnostic machine and the code indicated something about the fuel system. The recommendation was to replace the fuel pump. Considering that the truck is less than two years old is it possible that this could be something else and not the fuel pump?
Eric asked on 06/18/2008.
This is the wrong diagnosis. Your fuel pump does not throw a "Check Engine" code. Your fuel pump has to be tested with a special Fuel Pump Pressure Gauge tool and has to meet a certain PSI (Pounds per Square Inch) etc....35-55 PSI...ignition on and engine not running...etc.
Most vehicles are under warranty within this two year window. Call the local dealer. Although certain fuel problems can trigger a "Check Engine" light etc ....lean condition on bank two and cylinder two...at no time does a bad fuel pump trigger a "Check Engine" light.
The PRO answered on 06/18/2008.
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