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| Author | Topic: Flooding when hot |
pgpg42    POA Site Supporter Prowler Junkie From:Bradenton, Fl Manatee |
posted 11-08-2015 03:55 PM
    
I just went to Key West with the gang. On the way home we stopped to put the top up and use the restroom. It would not start when we went to leave. It appeared to be flooded and finally started after waiting about fifteen minutes. Tried the starting tips in the manual and the only thing that helped was to wait. THe car only has 6k miles on it. At about 4K miles I experienced the same problem and changed the fuel pump to the SRT pump and all was fine until today. I searched the forum for suggestions and could find nothing pertaining to this problem. Could the fuel injectors be leaking and allowing gas to flood the engine when you shut it off. Any suggestions would be appreciated. |
stevedymo    POA Site Supporter Prowler Junkie Personal ScrapBook From:Brick, NJ, USA |
posted 11-08-2015 04:22 PM
What makes you think it was flooded? Did you smell gas? Do a read and see if there are any codes. Maybe the fuel pressure is low. Try turning the key to the 'on' position for 4 dings then try starting. That will give the pump time to pressurize the fuel line. Let us know what you find. |
robin  POA Site Supporter Prowler Junkie From:St Thomas Ontario Canada |
posted 11-08-2015 04:57 PM
Check this thread out..... I have heard of pumps going bad not long after replacement. This one talks about the filter.. Bill the parts guy has new filters I think check with him ...robin Fly1956@comcast.com
This message has been edited by robin on 11-08-2015 at 05:02 PM |
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robin POA Site Supporter Prowler Junkie From:St Thomas Ontario Canada |
posted 11-08-2015 05:31 PM
Search ...hard to start when engine. http://www.prowleronline.com/cgi-bin/search.cgi?action=simplesearch&SearchIn=ALL&ForumChoice=ALL&SearchTerms=Hard+start+when+engine+wa&BooleanAND=YES&SearchDate=ALL&SearchUser=&Exa ctName=no&File=temp-2457335-170940-HAsy.cgi&Total=9&StartAt=A:000002 |
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pgpg42 POA Site Supporter Prowler Junkie From:Bradenton, Fl Manatee |
posted 11-09-2015 07:54 PM
The engine was definitely flood. I opened the hood and there was no smell of gas while the engine cooled off, however when it started there was black smoke and the smell of gasoline. It took a bit of time for the engine to smooth out. The first few times that I tried to start it I turned the key to "on" for a few moments like I always do which probably made the problem worse. I am leaning toward leaking injectors, throttle position sensor, or temperature sensor. Although the engine always runs cool (halfway on the gauge). The engine also periodically surges, up until now that did not concern me but the two issues may be related. |
quincy         POA Site Supporter Prowler Junkie From:Fairfield Glade, TN. USA |
posted 11-16-2015 02:51 PM
Any update or resolution to the issue?? |
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pgpg42 POA Site Supporter Prowler Junkie From:Bradenton, Fl Manatee |
posted 11-23-2015 07:30 PM
Just installed another Walbro SRT4 fuel pump, this time from Tom Mills. The problem with hot starts remains. Before I changed it a fuel pressure gauge hooked to the port on the engine read 40 lbs running and went to zero when the engine was turned off. I need to find a way to test the fuel pump output port and relief valve separately plus pressure test the injectors. The fuel pump output port seal and the pressure relief valve are not part of the Walbro repair kit. I am contemplating buying an entire fuel pump assembly for another Chrysler 3.5 v6 to obtain the seal and pressure relief valve. |
Tom Mills  POA Site Supporter and Vendor Prowler Junkie Tom Mills / Jefferson Auto prowlerparts@jeffersonautocollision.com From:Niles, MI and Punta Gorda FL |
posted 11-23-2015 10:22 PM
Where are "the fuel pump output port seal and the pressure relief valve" located? I should have a new pressure regulator if you think that may be a problem. This message has been edited by Tom Mills on 11-23-2015 at 10:33 PM |
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pgpg42 POA Site Supporter Prowler Junkie From:Bradenton, Fl Manatee |
posted 11-23-2015 10:39 PM
The outport seal is where the pump plugs into the housing. It is a round, flat metal housing with a blue seal inside. It is located where the Walbro pump plugs into the upper plastic lid of the fuel pump assembly. I cannot find this available anywhere. I have found the relief valves, however they cost 3 times as much as a complete pump assembly for a normal Chrysler. |
mslc10 POA Site Supporter Prowler Junkie From:Bulverde, Texas, United States |
posted 11-24-2015 07:32 PM
Sounds like fuel injectors are leaking ....what's the possibility of the pressure regulator seal failing and raw gas being suck/forced strait into the manifold thru the vacuum port to regulator? Just a thought.....seems to me the only ways to get fuel into engine....oh what about charcoal filter? Can raw fuel be sucked up thru it? http://www.doityourself.com/stry/7-symptoms-of-a-bad-fuel-pressure-regulator#b This message has been edited by mslc10 on 11-24-2015 at 07:39 PM |
dru POA Site Supporter Prowler Junkie From:Texas |
posted 11-24-2015 10:31 PM
quote: I think this link ( http://www.prowleronline.com/ubb/Forum1/HTML/021618.html ) talks about the "outport seal" he refers to, don't know what it is actually called but either outport or output seal is reasonable. I have a similar question as I recently helped someone replace her fuel pump and when doing it, the blue seal was bulging out and the whole seal was cock eyed. Didn't think too much about it at the time, but after all was put back together, seems to crank longer than it should when warm. And then I got to thinking (late as usual), is that due to bad fuel pressure regulator or the "output seal". Have not done fuel pressures yet but suspect the same problem, drops to near zero. Will check pressures soon. Any input appreciated, and if anyone knows a replacement for the output seal, please chime in. The picture below shows the part, but not the one I'm involved with as hers is 3 times worse.
This message has been edited by dru on 11-25-2015 at 10:31 PM |
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pgpg42 POA Site Supporter Prowler Junkie From:Bradenton, Fl Manatee |
posted 11-25-2015 05:14 PM
This is exactly the part I am referring to. The space shuttle shaped piece on the top of the Walbro pump plugs into this device. When I unplugged the gas lines connecting to the fuel pump this port was empty, however the pressure relief port was full of gas. I am searching for a safe way to pressure test the pump. The ports are not the same diameter so need to be creative with the hookup to the pressure gauge. |
padroo POA Site Supporter Prowler Junkie From:Chesterton, IN, USA |
posted 11-26-2015 05:47 AM
How does a bad fuel pump flood an engine, I am confused? |
DublinOH POA Site Supporter Prowler Junkie From:McMurray, Pa, USA |
posted 11-26-2015 09:25 AM
I have the same (or similar) issue with the 99 I just bought. Starts first try every time when cold. After it has been running, starts consistently on the 2nd or 3rd attempt. It cranks over quickly, but sounds flooded (not sure it really is). I have a Mills pump coming to take that variable out if the equation. I'll stay tuned here and report back. |
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padroo POA Site Supporter Prowler Junkie From:Chesterton, IN, USA |
posted 11-26-2015 09:01 PM
Why not test your fuel pressure first. It is easy to do and here is the gauge you need to test it. http://shop.advanceautoparts.com/p/otc-fuel-pressure-test-kit-otc5630/28031640-P?zoneAssigned=1&prefZC=46304 |
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Tom Mills POA Site Supporter and Vendor Prowler Junkie Tom Mills / Jefferson Auto prowlerparts@jeffersonautocollision.com From:Niles, MI and Punta Gorda FL |
posted 11-30-2015 03:19 PM
PGPG42, Terry told me you called today. If you can send me a smaller picture of the part so I can see where it actually goes in relation to the rest of the pump I should be able to get you one |
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pgpg42 POA Site Supporter Prowler Junkie From:Bradenton, Fl Manatee |
posted 11-30-2015 09:17 PM
Thank you Tom. I could not add a photo to this reply so I sent it to your Jefferson Auto account |
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dru POA Site Supporter Prowler Junkie From:Texas |
posted 11-30-2015 09:59 PM
quote: Tom, if it's the "output" seal you can get, I need one too for a friend and I think a few others may need one also. So if you find a source, please let us know. Thanks. |
ed monahan POA Lifetime Site Supporter Prowler Junkie Personal ScrapBook From:Cincinnati, Oh, USA |
posted 11-30-2015 10:05 PM
Once again, the POA shows that is a very valuable resource. Thanks Tom. |
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Tom Mills POA Site Supporter and Vendor Prowler Junkie Tom Mills / Jefferson Auto prowlerparts@jeffersonautocollision.com From:Niles, MI and Punta Gorda FL |
posted 12-03-2015 07:25 PM
pgpg42 I sent you a private message |
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Tom Mills POA Site Supporter and Vendor Prowler Junkie Tom Mills / Jefferson Auto prowlerparts@jeffersonautocollision.com From:Niles, MI and Punta Gorda FL |
posted 12-07-2015 08:21 PM
I have the engineering department looking into it. So far they are telling me the output seal we think you are referring to has an "o" ring seal in it and it is not to difficult to roll it out of place when assembling the pump into the canister which would cause low pressure. And he mentioned something about a check valve to. I hope to have some information in a few days. |
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pgpg42 POA Site Supporter Prowler Junkie From:Bradenton, Fl Manatee |
posted 12-07-2015 09:45 PM
Tom, The check valve is inside the Walbro pump and holds pressure in all 3 Walbro pumps (the original factory pump and two SRT4 pumps that I have installed). The seal I am referring to inside the metal canister is blue and does not resemble an o ring. It has not rolled out of the canister. It does not fit tight around the space shuttle looking plastic piece on the top of the Walbro pump and therefore does not hold pressure. Thank you for your help. |
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dru POA Site Supporter Prowler Junkie From:Texas |
posted 12-08-2015 09:26 PM
quote: Tom, I don't know about an "o" ring as I've not taken one apart because I'm concerned can't get it back together. But this is one of the pictures on the link I referenced in my earlier reply. I don't see an "o" ring but the blue gasket does have what looks like a "lip" around it which I think inserts into the plastic body of the fuel pump housing. Appreciate any and all input. |
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Tom Mills POA Site Supporter and Vendor Prowler Junkie Tom Mills / Jefferson Auto prowlerparts@jeffersonautocollision.com From:Niles, MI and Punta Gorda FL |
posted 12-14-2015 05:32 PM
I talked to my contact today and he is still waiting for a reply from engineering. I will get back as soon as I hear something. |
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quincy POA Site Supporter Prowler Junkie From:Fairfield Glade, TN. USA |
posted 12-17-2015 05:01 PM
Looks like Ethanol caused the material to swell and deteriorate. Its hard to get away from E10. Never run E85. Always use a modern fuel stabilizer to negate the effects of this aggressive gasoline additive. Most likely you may have to purchase a used or new plastic pump housing. Good luck! Please keep us up to date on the solution you implement. |
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