OutofTime
Florida
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udidwht wrote:How is this coming along?
Haven't had time to work on it, other more pressing projects had to get done. I hope to put a little time into it this weekend. I've got a brand new Delphi dizzy that is supposed to be the OEM one that's come in. I'm hoping with that, plus fixing my timing light that I'll be able to get this thing timed and running.
I'm also intending to inspect the vacuum passages the MAP is hooked into and clean those, along with making sure there are no blockages in the MAP tubing itself.
Lastly, my FPR spring arrived and I need to install that. Fingers crossed good things will happen this weekend.
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udidwht
Renton Highlands, Wa.
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Joined: 08/11/2014
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OutofTime wrote:udidwht wrote:How is this coming along?
Haven't had time to work on it, other more pressing projects had to get done. I hope to put a little time into it this weekend. I've got a brand new Delphi dizzy that is supposed to be the OEM one that's come in. I'm hoping with that, plus fixing my timing light that I'll be able to get this thing timed and running.
I'm also intending to inspect the vacuum passages the MAP is hooked into and clean those, along with making sure there are no blockages in the MAP tubing itself.
Lastly, my FPR spring arrived and I need to install that. Fingers crossed good things will happen this weekend.
Thanks for the feedback. Keep us updated on the outcome as this will definitely help one down the road.
1994 Fleetwood Southwind Storm
P-30 chassis 7.4L 454 TBI 58,301 miles and counting....(as of 06/08/19)
VIN# 1GBJP37N4R3314754
Flight System Generator man 360 (PM me)
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OutofTime
Florida
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Updates
Today I went full ACDelco. ACDelco ect, coil and full distributor stack. I realized my timing gun couldn't be fixed so I grabbed a new one and I could finally get a reading on an individual spark wire when cranking only.
With that knowledge I first timed to wire 5 to 4 BTDC then tried a crank... nothing.
I then was able to actually time wire 1 to the top timing marks to 4 BTDC and that's where I left it for the day. Kids needed to get in bed and the battery was about done after all the timing testing.
I'm totally confused by this engine. When I time it then crank with fuel basically nothing is happening. I did get a few backfires after I pulled the fuel injector fuse and was cranking for timing purposes.
I even as an experiment pulled the injector fuse then tried giving it a snort of ether to see if it would fire. Nothing.
At this point I'm down to the plugs have gotten so fouled again from the rich running that they need to be cleaned before they'll fire off properly again.
I also used a straw to check the accuracy of the timing marks on cylinder 1 and I think the balancer is ok. I set the timing marks to around 10 BTDC and tried to insert a straw and was able to, but I could feel the straw getting bent up a bit which told me the cylinder was close to TDC.
Next steps for me are to figure out how to clean fouled spark plugs and pray that it fires off after I set it to 4 BTDC on wire 1.
I think I'm also going to open valvecovers and see if I have stuck valves or something. I don't think I do because I didn't hear that when it was running but there has to be something that I'm missing. I've timed several engines before and none have acted like this.
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enblethen
Moses Lake, WA
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Did you raise number one cylinder to top dead center?
Was the timing mark on the crank at the pointer?
Was the distributor pointing to number one plug?
Did you verify the plug wires are in the correct place? Engine rotates clockwise. Did you diagram posted much earlier for plug locations?
Bud
USAF Retired
Pace Arrow
2003 Chev Ice Road Tracker
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OutofTime
Florida
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enblethen wrote:Did you raise number one cylinder to top dead center?
Was the timing mark on the crank at the pointer?
Was the distributor pointing to number one plug?
Did you verify the plug wires are in the correct place? Engine rotates clockwise. Did you diagram posted much earlier for plug locations?
I answered these questions in the previous post
1. I set the balancer to 4 BTDC and checked the cylinder position via a straw through the spark plug hole. It felt right
2. I had the groove in the balancer lined up with the "peak" of the timing mark at 4 BTDC
3. Yes, pointing at where the number 1 wire connects to the cap
4. Yes, firing order has been checked several times, checking in a clockwise direction from the number 1 terminal on the cap
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Bikeboy57
Inverness, FL
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Gonna make this suggestion again. Place a spark tester on #1 and place the tester close as possible to the harmonic balancer and timing mark. Video the mark with the engine turning. Play the video frame by frame to obtain definitive data on what is going on. You can see the spark and the mark. In my case the spark was no where close to the timing mark, which led me to discover the engine i was working on had two marks on the harmonic. One for viewing from above and one from below. I also discovered I had a plug wire wrong despite two prior quality checks.
Richard and Rhonda
1999 Newell
Subaru Outback toad
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enblethen
Moses Lake, WA
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I think you should look into a professional to determine and repair your problem!
I doubt removing valve covers will show anything.
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Bikeboy57
Inverness, FL
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There are also two other possibilities that you should diagnose before throwing more money at guesses. One, is it possible the engine has jumped time? As best I remember that engine has a timing chain. Second it is possible to install the distributor 180 out which will produce the results you are getting.
A trick for ensuring tdc is to screw a compression test hose in the spark plug hole, but instead of a gauge run the hose into a cup of water. When you reach tdc it will stop bubbling
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Bikeboy57
Inverness, FL
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I think pulling the valve covers is an excellent idea, looking for proper valve actuation is you rotate through the four strokes. You can also video that with the spark tester in the shot
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OutofTime
Florida
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Bikeboy57 wrote:There are also two other possibilities that you should diagnose before throwing more money at guesses. One, is it possible the engine has jumped time? As best I remember that engine has a timing chain. Second it is possible to install the distributor 180 out which will produce the results you are getting.
A trick for ensuring tdc is to screw a compression test hose in the spark plug hole, but instead of a gauge run the hose into a cup of water. When you reach tdc it will stop bubbling
If it's 180 out, that means the balancer has slipped 180. I'm going to clean plugs and see what happens. If I still get nothing I'll try flipping the dizzy.
Engine needs a new water pump and fan clutch anyway so when I'm working on that I can take a peek behind the timing cover and see if the chain is super sloppy or has jumped a tooth. I don't think the Mark V 454 had the nylon teeth on the gear, but I could be wrong.
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