have a1991 honda civic dx with a 4 cylinder in it and the other motor that was in it got messed up and we got another motor that was in a 1989 honda civic and before the motor was taken out we drove it and it ran great. but now we got it put in the car and it is getting excellent spark and tries to start does anyone have any ideas on what we can do or what it might be.
2007-12-24 13:16:05 · 9 answers · asked by joy k 1 in Cars & Transportation ➔ Maintenance & Repairs
Besides the ones mentioned above me, check that you have fuel pumping there and that your tank o fuel is fresh
2007-12-24 13:24:07 · answer #1 · answered by Rich Z 7 · 1⤊ 0⤋
Unfortunately, with modern cars, the darn computer system comes into play, so it's not just a "simple" motor swap anymore. You've got a 2-year difference, the distributor in the 89 could be different enough from the 91 that the computer is not getting the timing right. Most timing is done by computer, no matter if you spin the distributor or not, due to a crank sensor on the big harmonic balancer on the front of the engine. If that is different than the other engine, it may be sensing the spark too early or late. You may need to contact a dealer mechanic about this issue. Also it could be the computer may need some sort of "reset", due to a motor change / sensor change. Again, I don't know much about the Honda's specifically, but I do know old cars, and with modern ones, you may need some help with the final dial-in to get the motor running properly. Obviously it ran before removing it, so it may just be a "simple" (ha!ha!) computer adjustment. Good luck,
- The Gremlin Guy -
2007-12-24 14:24:48 · answer #2 · answered by Anonymous · 2⤊ 0⤋
Engines need; spark, fuel, compression to run. They must be in the proper time. If it ran before then we can assume it had compression. You say it has spark, but is it in the proper timing and order. Check the ignition timing, make sure the ignition wires are in the right places. Make sure the cam(s) is (are) in proper time. If you put a new timing belt on it's easy to get it off one tooth ( I have a time or two ), if not I would strongly recommend a new timing belt. Is it getting fuel? Is it getting to much or to little? Check the EFI carefully, is the wiring harness connected properly? Did the EFI work before you changed engines? How about the vacuum lines and hoses, they all in the proper places and not bad/leaking? Fuel pump working, how about the fuel filter? Is it plugged? Does it have fuel in the tank, or is it rancid?Check the simplest stuff first.
best of luck and merry Christmas
Dave
2007-12-24 13:50:13 · answer #3 · answered by Dave R 3 · 1⤊ 0⤋
Don't forget to check your fuel pump. If you don't have fuel pressure the engine won't get any gas and wont run. Many cars have a sensor that disables the fuel pump if the car is in a crash (or just bumped hard) until it is reset or bypassed.
Is the wiring harness all hooked up?
2007-12-24 13:25:48 · answer #4 · answered by Anonymous · 1⤊ 0⤋
A good spark proves its turning over. Only thing left is fuel delivery. You either have a bad fuse, you don't have the wiring harness seated properly or a broken wire in the harness. You also could have a grounding problem.
2007-12-24 13:53:35 · answer #5 · answered by G T 6 · 1⤊ 0⤋
open the valve covers and pour some oil in the top of the ebgine or try this put a wrench on the harmonic balacer and then turn it over by hand a few times to lube the motor did yoyu check the fluids
2007-12-24 13:29:16 · answer #6 · answered by Anonymous · 0⤊ 1⤋
Does the car have a computer box. Is it the same as the one from the 1989 car?
2007-12-24 13:37:56 · answer #7 · answered by martywdx 4 · 3⤊ 0⤋
It could be any one of a thousand problems. GOOD LUCK!
2007-12-25 05:40:00 · answer #8 · answered by Bobo 7 · 0⤊ 0⤋
try checking your stater, battery, ignition coils, plugs and wires.
2007-12-24 13:22:02 · answer #9 · answered by poch 2 · 0⤊ 1⤋