89 BFN 454 DUI Install
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=46792
Printed Date: April-29-2024 at 12:06pm
Topic: 89 BFN 454 DUI Install
Posted By: tbeard
Subject: 89 BFN 454 DUI Install
Date Posted: September-06-2018 at 11:01pm
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I have completed the install of my DUI with built in coil in my 454. Carburetor backfire and no start condition. I have doubled checked the No 1 piston is on compression stroke using a waded paper towel in spark plug hole. Set at zero on timing tab. Rotor is pointed toward Number 1 terminal on cap and that plug wire runs to number 1 plug. (I have triple checked everything) I installed the plug wires in cap using firing order stamped on the intake. Going clockwise 18436572. Before changing out distributors the boat would start with 1 flip of the key....Acts like plug wires are off or distributor is off but I have taken it in and out 3 times and rotated engine several times and rotor still points to No. 1 when at TDC. ------------- Thanks.......Tom |
Replies:
Posted By: tbeard
Date Posted: September-06-2018 at 11:39pm
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I been researching the PCM engine manual and I think I am using the wrong firing order. Manual states PR 12756348. (not sure what the PR stands for except Right hand rotation. I will change it tomorrow and start the engine. If it starts the Intake has the wrong firing order. ------------- Thanks.......Tom |
Posted By: phatsat67
Date Posted: September-06-2018 at 11:53pm
| Yep, one stamped on the intake is standard rotation firing order. Use the order from the pcm manual. |
Posted By: tbeard
Date Posted: September-07-2018 at 12:13am
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Thanks........Wonder if backfires did any carb damage. ------------- Thanks.......Tom |
Posted By: Gary S
Date Posted: September-07-2018 at 12:23am
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Depends on how old the carb is. In around '92 they started putting a check valve in the power valve circuit to prevent blow out of that valve. It can be added on a rebuild too. Time will tell if it did blow out...... I don't understand why PCM did not grind those numbers off on a reverse engine ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: tbeard
Date Posted: September-07-2018 at 12:29am
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I just put a rebuild kit in the carb so I can rebuild again if need be. Yea 2 sets of firing order numbers is terrible. I'm going to grind them off and touch up paint. ------------- Thanks.......Tom |
Posted By: Riley
Date Posted: September-07-2018 at 9:15am
| LH firing order on intake is normal on any marine engine with a factory intake. For RH rotation, just start with 1 and read the rest of the numbers backwards. |
Posted By: tbeard
Date Posted: September-07-2018 at 3:37pm
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Got in running......Thanks for support. Now we need tp lake test it. ------------- Thanks.......Tom |
Posted By: Ian
Date Posted: October-05-2018 at 6:47pm
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How does it compare to the AC Delco OEM distributor? Do you feel a difference? ------------- '85 2001 454 |
Posted By: KENO
Date Posted: October-08-2018 at 9:57am
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Hi Ian Some people think the DUI is like the holy grail of distributors Others would say, it's just another distributor. If you're replacing a junk worn out distributor with something new, the new one of whatever brand should feel better  What's this Delco you have on a PCM 454?, They came with Prestolites originally One of your old posts says that you ordered a new distributor back in July |
Posted By: Jonny Quest
Date Posted: October-08-2018 at 11:57pm
 Indeed...but only with the RED cap... JQ ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
KENO wrote:Posted By: KENO
Date Posted: October-09-2018 at 12:03am
Totally predictable that you'd have a response to my comment. A good one too
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Posted By: Hollywood
Date Posted: October-09-2018 at 12:22am
| I feel like I see Mallory distributors in pcm 454s |
Posted By: KENO
Date Posted: October-09-2018 at 1:23am
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Well.................., I feel you might be right. I've had one of each over the years and see listings for both
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Posted By: Ian
Date Posted: October-09-2018 at 1:32am
Hahaha Yeah, I did order a DUI distributor..... but after that one damned boat shop completely ***************ed the whole project up, the engine manufacturer demanded that they send it back (as the manufacturer didn't want their name dragged thru the mud because of what a shop ***************ed up). Once the manufacturer got the 1st rebuilt engine back from the shop, he said there was so much done wrong, and things ***************ed up that he scrapped the whole engine, and just built me a new one from scratch (and the shop had to foot the bill). He said he preferred to use the Delco distributor. So, I do have a brand new DUI distributor (with a red top of course) sitting in my garage, unused.. I'm trying to decide if I should use it on my new 454, or sell it. ------------- '85 2001 454 |
Posted By: KENO
Date Posted: October-09-2018 at 1:50am
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Is it a Delco EST electronic distributor? It sounds like it's installed already and maybe the engine is running. They're a good distributor, so is the DUI The EST has no flyweights or springs to control advance. It's done electronically, so less moving parts and more electronics That red cap DUI will be a hot seller if you go that route
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Posted By: Ian
Date Posted: October-09-2018 at 2:33am
It is!!! I took her on her maiden voyage today! Of course it was 30's and snowing.. haha But great to get her out! ------------- '85 2001 454 |
Posted By: JDD33
Date Posted: October-09-2018 at 11:48pm
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I'd be interested in that DUI for my Barefooter! ------------- Old school goin back to school! |
Posted By: KENO
Date Posted: October-10-2018 at 12:01am
Told ya so
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Posted By: Ian
Date Posted: October-13-2018 at 11:50pm
Message me! ------------- '85 2001 454 |