Engine cranks but will not start?

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi Matt,

Thank you for the donation.

When engine could be cranked but does not fire up, you need to verify if it is fuel or ignition system that is causing the fault.

1. Fuel. Test for fuel pressure at fuel rails by releasing the fuel pulsation damper.

Use a wrench on the fuel pulsation damper (A) at the fuel rail.
Place a rag or shop towel (B) over the fuel pulsation damper.
NOTE: Replace all washers whenever the fuel pulsation damper is loosened or removed.

Slowly loosen the fuel pulsation damper one complete turn.
If pressure is available, fuel would gush out confirming there is pressure.


https://www.2carpros.com/forum/automotive_pictures/192750_FuelPressureRelieve99Accord_1.jpg



If pressure is not available, next to it you can see the fuel pressure regulator. Remove the hose and attach another hose with a collection at its end. Turn ignition switch ON. If fuel rushes out, fuel pump is ok and the regulator is faulty. If no fuel rushes out, check the PGM-FI main relay and fuel pump.


https://www.2carpros.com/forum/automotive_pictures/192750_PGMFIRelay99Accord_1.jpg



2. Ignition. This would be more complex as it involves many components so the first step is to test for sparks at spark plugs. Remove a plug wire and attach a spark plug to its end and ground it to the engine. DO NOT ground it to battery negative terminal, soarking can cause the battery to blow up.
Crank the engine and watch the spark if any, it should be bright blue and if it is dull orange, the ignition coil is weak.

Let me know what you find out.
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Monday, September 28th, 2020 AT 4:47 PM (Merged)
Tiny
HONDARETIRES09
  • MEMBER
  • 1 POST
  • 1999 HONDA ACCORD
Engine Mechanical problem
1999 Honda Accord 6 cyl Two Wheel Drive Automatic 170k miles

My accord will crank but not start. I had this problem mid last year. The mechanic replaced the alternator and battery. They also said the belt was due but I didnt have money to spare. (I think they just wanted to empty my pocket cause they gave me a long list to get done). I still had the same problem after this expense. Then I had oil change, I asked the techs to change my sparks. Ever since then It was running fine except this one time when I was driving, my car just died. As of today, my car just wont start. It was fine on thursday.I've had my car for 10 years now, 170k. Can it be my ignition? I noticed honda has an ignition recall, I think in 2002 and I never received this information. Can it be due to this or is my car had reached its limit? Thank you
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Monday, September 28th, 2020 AT 4:48 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, distributor pick-up coil, ignition control module, cam and crank sensors- Note: If it doesn't apply disregard it
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Monday, September 28th, 2020 AT 4:48 PM (Merged)
Tiny
CALINA BUSTILLOS
  • MEMBER
  • 1 POST
  • 1999 HONDA ACCORD
  • 2.3L
  • TURBO
  • AUTOMATIC
  • 156,000 MILES
So I am trying to get this car started. It cranks but will not fire spark. The plugs have spark, fuel pump is working, distributor cap, distributor, but it seems like it is not like it wants to start but it is not. I do not smell any gas or anything and I was told I have to take it to the shop to have a fuel filter replaced. Please help.
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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

These cars had a big problem with the distributor going out. Can you remove the cap and looks for rust colored dust please? This is a sign the distributor needs to be replaced.

Please run this test and get back to us we are interested to see what it is.

Cheers, Ken
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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
DAVID0217
  • MEMBER
  • 3 POSTS
  • 1999 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 155,000 MILES
Car will intermittently not start. Could be a year or days between the issue. Turns over but seems like it is not getting gas. I go through the procedures in the manual (50% pedal depression for 10 sec, 15 sec pause, full depression, repeat, etc) but doesn't work. After letting it sit for about 30 minutes or so - starts fine. Used to happen on hot days but just recently happened on a cool day.
Any ideas?

03/23/10 - Found out it is the main relay
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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi David0217,

One of the item that would cause intermittent non starting due to lack of fuel is the PGM-FI main relay.

When problem occurs, you need to check if the fuel pump is running at initial ignition on.
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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
MYHONDA353
  • MEMBER
  • 1 POST
  • 1999 HONDA ACCORD
Engine Performance problem
1999 Honda Accord 4 cyl Automatic 179000 miles

My 1999 Honda Accord won't start. It will turn over and sounds like it wants to start but will not. Do you have a suggestion about what may be causing the problem?
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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi myhonda353,

First you need to verify if it is fuelor spraks that is missing.

Pull out a plug wire and attach a spark plug. Ask someone to crank the engine while you hold the plug grounded to the engine and check if spark is available.

If yes, then check if fuel pressure is present at the fuel rail. Test if the fuel pump works for 2 seconds when ignition switch is turned on. If fuel pump does not work, check the PGM-FI relay for power output when ignition is turned yto ON.
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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
MARKLAC
  • MEMBER
  • 1 POST
  • 1999 HONDA ACCORD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 20,500 MILES
Replaced fuel pump, coil, distributor cap, rotor, IMC. No spark, engine turns over. Timing belt intact.
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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
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Hi MarkLac,

Is there power supply to distributor black/yellow wire?

With new coil and ICM, the distributor should spark if there is power supply.
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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
JHON PAUL YOGG
  • MEMBER
  • 1 POST
  • 1999 HONDA ACCORD
  • 3.3L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 230,000 MILES
I was driving down the Parkway and had a really bad oil leak. I tried to make it home, but the car just stopped running. A couple lights came on, the oil light and the battery light in the light that tells you all the doors are open. It will crank over but it just will not start up.
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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi JHON,

Check out the link below on how to go about diagnosing what could be wrong or missing causing the non-starting. We would only be able to assist after knowing what is missing.

https://www.2carpros.com/articles/car-cranks-but-wont-start

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Monday, September 28th, 2020 AT 4:49 PM (Merged)
Tiny
ILUVMYHONDA99
  • MEMBER
  • 1 POST
  • 1999 HONDA ACCORD
I have a 99 Honda Accord, 156,000 miles (approx.), Automatic, 4-Cylinder V-Tech Engine. It is not making any strange sounds or leaking anywhere that we have found. I recently took it to a Honda Dealer and had the EGR Valve replaced and a tune-up done (about 2 or 3 months ago). They told me that everything looked good except that I needed to have the transmission fluid changed and a new timing belt. It was fine until about three weeks ago when it decided to not start when it gets hot. I can start it perfectly fine in the AM (after it has set all night) and drive it for an hour without any problems. Sometimes I can get right back in and drive again, other times it dies when I put it in gear, but as soon as I shut it off, it won't start back up. Sometimes it will take 15-30 minutes to restart, other times it takes up to 2 hours? It turns over but acts like it isn't getting any gas, as when I push the gas pedal it doesn't seem to do anything. The engine light is not on either. Everyone I know has a different opinion of what it could be but the mechanics say they can't find anything. One person says a coil could be bad, another says it could be spark plugs (which are brand new). I get stranded everywhere I go when it is hot out because it seems to exacerbate the problem. I am completely cluelss. If anyone could lead me in some sort of direction to try and find the problem, it would be much appreciated.
Thanks.
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Monday, September 28th, 2020 AT 4:50 PM (Merged)
Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
Get yourself stranded at home. Set it up so that it will not start at your home. Then when it is refusing to start determine whether it is spark related or fuel related. Pull a plug and check the spark on the plug. Got any spark?
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Monday, September 28th, 2020 AT 4:50 PM (Merged)
Tiny
99HONDA
  • MEMBER
  • 1 POST
Hi there,

I have same problem and I changed the coil, module inside distributor but my 99 honda wont start when its hot and now I found out it is the main relay under the dashboard on driver side I took it out, with a flat screw driver pop the cover out off the main relay check under a magnify glass or microscope you gonna see a crack between the solder joint and now if you have a soldering iron you can reflow it or go to honda dealer get yourself a new relay after you did it. Drive your car when the weather s hot. Stop, park your car in a safe area turn it off, restart it . If the main relay it will start back on.I hope this will help.
Sorn regards
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Monday, September 28th, 2020 AT 4:50 PM (Merged)
Tiny
HRJ77
  • MEMBER
  • 6 POSTS
  • 1999 HONDA ACCORD
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 104,000 MILES
My elderly (80's) parents have a 1999 Honda Accord LX (4cyl) with automatic transmission, approx 105,000 miles. They called me because it wouldn't start. The engine turns over great, but just doesn't fire. I went over and checked the usual things (gas & spark). It didn't seem to be getting gas so I replaced the fuel pump (that was fun.) But still didn't start. I then changed the rotor, distributor cap & the plugs. I also checked and changed the fuses but that didn't help either. When I test to see if there is spark there is none. So the engine doesn't seem to be getting spark or gas. What am I missing? Is there a computer control module that would be controlling these things that I man need to change? I look forward to your input!
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Monday, September 28th, 2020 AT 4:50 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi HRJ77,

There is an ECM to control the starting and running of the engine but it seldom is the problem.

First you need to isolate if it is mechanical, electrical or fuel that is causing the problem.

Remove the distributor cap and crank the engine, if the rotor turns, we can skip mechanical.

Before checking any electricals, check if there are any blown fuses both under dash and hood.

Check for power supply to distributor Black/Yellow wire with ignition switch on. If there is, pull 1 plug wire out and insert a plug to its end and ground it on the engine, NEVER groud it to the battery terminals.

Crank the engine and if you see blue sparks it is ok, reddish or yellow sparks means the coils is bad.

If no sparks, the ICM is faulty.

Test for power supply to fuel pump at initial ignition switch turned on, (2 seconds only) and while cranking. If none, the main relay is faulty.
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Monday, September 28th, 2020 AT 4:50 PM (Merged)
Tiny
HRJ77
  • MEMBER
  • 6 POSTS
Hello KHLow 2008!

Wow, thank you so much for the detailed troubleshooting path to follow!

I eliminated the mechanical as the rotor turns and I have checked all the fuses and they are good.

I am wondering how to check power supply to the distributor black/yellow wire & fuel pump? (Voltmeter? If so can you give me a few more details. I have used a voltmeter a couple times, but am not that proficient with it.

I tried pulling one of the spark plug wires and putting another spark plug in it to see if it received spark but I couldn't see any.

I have tried to listen and see if the fuel pump engages when the ignition is turned on, but I don't hear anything. I obviously need to follow your instruction and test the power to the both the distributor and fuel pump, but would greatly appreciate a little more instruction.
Thanks Again! HRJ77
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Monday, September 28th, 2020 AT 4:50 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi HRJ77,

You are welcomed.

So far so good, we are going in the correct direction.

No sparks at plug means the distributor is not providng any, hope you did ground the plug while cranking.

To check for power supply to distributor, unplug the coupler and connect the Black/Yellow wire to a voltmeter or a test lamp to ground and turn ignition switch on. Battery voltage should be present/test lamp lights up means power is available.

If no power supply, you need to check for broken wires, blown fuses, bad or disconnected wire connectors.

We settle this first.
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Monday, September 28th, 2020 AT 4:50 PM (Merged)

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