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jokitsu

small engine fire. HELP PLEASE!!

Question

Small engine fire from over heating with engine oil residue that ignited on the front of the engine. Burned up spark plug wiring replaced wires. Ignition module connection wires melted snipped those and replaced them. Fuel injectors a little scorched but I believe they are still intact. Ignition coils still intact and sparking. It acts like it wants to start. Turns over but won't quite get there. Any thoughts? It's so close to starting I wanna rip my hair out. It just kicks and kicks but nothing...

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It would help if you let us know what year, make, model, and engine you have here. It is a more modern car or an older classic? Since you mention fuel injectors I suspect it is more of the latter.

If it is a newer car, then I suspect that leads for some other engine sensors, like the crank position sensor, mass air meter, throttle position sensor, were also fried and have to be replaced. However that is a guess at this point without knowing a tad more information.

Did the fire remain in the engine compartment or did anything under the dash also get fried?

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The fire could have grounded something and be as simple as blowing a fuse. Check ALL fuses and relays.

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It's a 05 grand prix gtp. The fire was just up by the front if the engine. Replaced the spark plug wires. Checked the fuses. The little 15 for the fuel relay was blown but nothing else was. Having a new wiring harness delivered tomorrow for the ignition control module, crankshaft sensor etc. Tried patching the wires that were burned but don't feel 100% confident about them so just replacing the whole thing instead.

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I assume it’s the 05 GP? This was a recall issue did the car go in for the recall? If so this on them. That said, you’ll need to go back to square one, the fire could have done damage you don’t see. Spark, fuel, air! Is there a spark at every wire? Is the mag pickup at the crank working? Is the computer plug at the coil pack damaged. Do you have fuel at every injector? Are any of the plastic (3) fuel lines damaged/burnt? The 3 lines are supply, fuel return and vapor return. Try some ether at the throttle body. Check the air intake sensor in the boot between the air box and the throttle body.

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What happened was that the water pump went out and the car over heated. It leaked a little engine oil down the front of the engine. We fixed the water pump and it ran fine until one of the radiator hoses blew out. It over heated again and the oil on the front of the engine ignited. Two of the fuel injectors look a little scorched but I don't think it was bad enough to stop them from preforming properly. One of the vacuum lines was a bit toasted but we snipped off the damaged area and patched it up. It don't think the computer plug at the coil pack was damaged but I have a whole wire harness set up coming tomorrow. Tested spark, everything seems OK there. The engine turns over and I got it to fire for a second with some starter fluid but only for a second and only once 

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Well see if it will fire again with ether, if so it most likely isn't spark, but I would still look at the mag pickup. it's in the area where the water pump blew. the other possible issue is the overheating caused damage to a head or head gasket, so you may need to check compression. also possible it caused damage to the blower or the cooling plate between the throttle body and the plenum. check the oil to see if the is any evidence of  antifreeze in the oil. take a white paper towel and wipe the dip stick on it. look for an iridescent hue on the oil and a leach pattern that's different than the oil on the paper towel.

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