Ok I need help BADLY engine wont start
08-17-07, 10:46 PM
#1
HAHA V8
Thread Starter
Join Date: Jan 2007
Location: Virginia
Posts: 355
Likes: 0
Received 0 Likes
on
0 Posts
Ok I need help BADLY engine wont start
I just installed an ultimate fuel system, sent my ECU off to rx7store to get it tuned for injectors, put everything back together, and car WON'T start, but it'll crank. Replaced the plugs, then tried starting it again, but only got crank, then pulled a plug out and it's wet. The car is only firing a few times. I also put a new battery in it today, still won't start. I need help very badly, any help will be GREATLY appreciated, thanks.
08-17-07, 10:55 PM
#2
Eats, Sleeps, Dreams Rotary
iTrader: (13)
Join Date: Aug 2002
Location: Pittsburg, KS.
Posts: 4,152
Likes: 0
Received 0 Likes
on
0 Posts
I just installed an ultimate fuel system, sent my ECU off to rx7store to get it tuned for injectors, put everything back together, and car WON'T start, but it'll crank. Replaced the plugs, then tried starting it again, but only got crank, then pulled a plug out and it's wet. The car is only firing a few times. I also put a new battery in it today, still won't start. I need help very badly, any help will be GREATLY appreciated, thanks.
Trending Topics
08-18-07, 11:17 AM
#11
it would crank slower than normal.
It wouldn't hurt to try deflooding either way, you don't stand to lose anything by trying. Except maybe a half hour of your saturday.
http://www.fd3s.net/starting_flooded.html
It wouldn't hurt to try deflooding either way, you don't stand to lose anything by trying. Except maybe a half hour of your saturday.
http://www.fd3s.net/starting_flooded.html
08-18-07, 11:30 AM
#12
Senior Member
Join Date: Mar 2001
Location: Roaring Spring, PA USA
Posts: 524
Likes: 0
Received 2 Likes
on
2 Posts
First rule of thumb, check for the three ingredients in a running motor, spark, fuel, compression.
Since the plugs are wet, you have fuel (maybe too much).
Next, check for spark. Pull fuel pump relay and Remove a plug and ground it to see if there is spark when cranking. No spark=electrical issues with ignition. (watch for gas coming out of the plug hole, don't want to catch everything on fire!!!!) Make sure you don't pull the ignition relay that kills igniters as you may think you don't have spark, but actually would. You could also remove plug at the fuel pump to make sure instead (located under hatch carpet, drivers side corner).
Lastly check for compression. With the fuel pump relay pulled, remove top or bottom plugs (only one on each rotor) and have someone crank over. Check for three consistent swoosh sounds and/or stick finger over hole to see if compression "feels" equal. If there is one or two dead sounds out of three, then it is a motor issue, possibly blown. A compression test can be done with a regular compression tester, but the tire valve needs removed. Looking for three even compression bumps per rotation.
If I were a betting man, I would say that the injectors are flowing way too much causing the plugs to foul out. Once they are wet, they don't arc as well. Use a propane torch to burn off and dry them out before reinstalling. Also, you must "unflood" the engine by removing plugs, disconnecting fuel relay, and cranking over with throttle wide open (lets fresh air in to push out fuel flooded air) until the unburned fuel appears to have dissipated (clouds of gas mist come out, so put a rag over the plug holes to catch most of this). Remember, no open flames or this gas could explode.
I would then try the starting fluid that jamespond24 mentioned, but before doing that put about 1 teaspoon full of ATF or marvel mystery oil in the plug holes on each side of the rotor face and rotate engine around a few times (aids in compression sealing since the flooded gasoline will most likely remove any oil seal that you had).
While cranking over, spray some ether or starting fluid into the intake plenum (disconnected from the intercooler to the intake). If it fires off, you know you have adequate compression and spark. Put relay back in and with no throttle, try to start again. If they flood up again, then most likely there is something wrong with the injectors (bad seal, leaking, stuck open).
My guess is that one or more of the injector seals is not sealing properly and gas is flooding into the engine. If this is what you suspect, do a fuel pressure leakdown test to verify this before tearing it all back down. Use new injector seals if this is the case.
Good Luck
Tim
Since the plugs are wet, you have fuel (maybe too much).
Next, check for spark. Pull fuel pump relay and Remove a plug and ground it to see if there is spark when cranking. No spark=electrical issues with ignition. (watch for gas coming out of the plug hole, don't want to catch everything on fire!!!!) Make sure you don't pull the ignition relay that kills igniters as you may think you don't have spark, but actually would. You could also remove plug at the fuel pump to make sure instead (located under hatch carpet, drivers side corner).
Lastly check for compression. With the fuel pump relay pulled, remove top or bottom plugs (only one on each rotor) and have someone crank over. Check for three consistent swoosh sounds and/or stick finger over hole to see if compression "feels" equal. If there is one or two dead sounds out of three, then it is a motor issue, possibly blown. A compression test can be done with a regular compression tester, but the tire valve needs removed. Looking for three even compression bumps per rotation.
If I were a betting man, I would say that the injectors are flowing way too much causing the plugs to foul out. Once they are wet, they don't arc as well. Use a propane torch to burn off and dry them out before reinstalling. Also, you must "unflood" the engine by removing plugs, disconnecting fuel relay, and cranking over with throttle wide open (lets fresh air in to push out fuel flooded air) until the unburned fuel appears to have dissipated (clouds of gas mist come out, so put a rag over the plug holes to catch most of this). Remember, no open flames or this gas could explode.
I would then try the starting fluid that jamespond24 mentioned, but before doing that put about 1 teaspoon full of ATF or marvel mystery oil in the plug holes on each side of the rotor face and rotate engine around a few times (aids in compression sealing since the flooded gasoline will most likely remove any oil seal that you had).
While cranking over, spray some ether or starting fluid into the intake plenum (disconnected from the intercooler to the intake). If it fires off, you know you have adequate compression and spark. Put relay back in and with no throttle, try to start again. If they flood up again, then most likely there is something wrong with the injectors (bad seal, leaking, stuck open).
My guess is that one or more of the injector seals is not sealing properly and gas is flooding into the engine. If this is what you suspect, do a fuel pressure leakdown test to verify this before tearing it all back down. Use new injector seals if this is the case.
Good Luck
Tim
08-18-07, 11:37 AM
#13
HAHA V8
Thread Starter
Join Date: Jan 2007
Location: Virginia
Posts: 355
Likes: 0
Received 0 Likes
on
0 Posts
it would crank slower than normal.
It wouldn't hurt to try deflooding either way, you don't stand to lose anything by trying. Except maybe a half hour of your saturday.
http://www.fd3s.net/starting_flooded.html
It wouldn't hurt to try deflooding either way, you don't stand to lose anything by trying. Except maybe a half hour of your saturday.
http://www.fd3s.net/starting_flooded.html
08-18-07, 03:47 PM
#15
Did you check for spark?? Pull the FP relay, pull out a plug, put the plug in the wire and ground it on the strut tower or something..Look for spark, obviously. Also check your grounds and make sure your coils are hooked up properly..Also the spark plugs wires are on the right plug.
08-18-07, 03:55 PM
#16
HAHA V8
Thread Starter
Join Date: Jan 2007
Location: Virginia
Posts: 355
Likes: 0
Received 0 Likes
on
0 Posts
Did you check for spark?? Pull the FP relay, pull out a plug, put the plug in the wire and ground it on the strut tower or something..Look for spark, obviously. Also check your grounds and make sure your coils are hooked up properly..Also the spark plugs wires are on the right plug.
08-18-07, 05:51 PM
#18
How long has the gas been in the tank? It can't hurt to siphon out as much as you can and then put in 10 gallons of good stuff.
I don't really think it could become that bad in only 7 months, but it's worth a shot...
I don't really think it could become that bad in only 7 months, but it's worth a shot...
Thread
Thread Starter
Forum
Replies
Last Post
befarrer
Microtech
3
08-22-15 05:52 PM