How to Diagnose an Engine Problem
Other People Are Reading
Instructions
-
-
1
Narrow down the problem. Is the car not starting? Running roughly? Conking out? Using too much gas?
-
2
Isolate the system most likely to cause that particular problem. If the car is conking out, the fuel system might be at fault. If it is not starting, look at the electrical system. Check the cooling system if the car is overheating.
-
-
3
When you have isolated the most likely system, locate the weakest link in that system. The fuel pump, for example, is often the most vulnerable part of the fuel system.
-
4
Check each successive part in the system until you find the problem.
-
5
Replace or repair the broken part.
-
1
Tips & Warnings
Specific tests and signals will help speed diagnosis of specific problems. Consult your car's manual for more information.
More Like This
Comments
View all 32 Comments-
where are the engine diagrams.
-
I have a 2001 VW Bora petrol on disconnecting battery to clean I re connected it but when I tried to pull away the engine revs died and the car failed to move on trying again and again it final moved off slowly at first and very sluggish throuth the gears but after a few days the car runs ok. Today I disconnected battery to charge because car would not start so I jumped it with cables car was ok, on reconnecting I again tried to pull away same problem no power but again was ok.
-
Christopher A Lincoln Common problem is battery cable melts and grounds out on exhaust manifold then it will cool down rubber coating expands pulls bare wire back off manifold and it starts . 7 minutes ago ยท Like
-
Tony Guzman Check starter solenoid
-
Starter/solenoid. Generally there is a heat shield to protect the starter from excessive engine heat during operation. However it would be a good idea to verify there is voltage to the starter when the key is turned. Could be a contact in your key switch as well though less likely.
